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Electronics and Telecommunication Research Institute
(213 results)-
Whitepapers
Design Evaluation System With Visualization and Interaction of Mobile Devices Based on Virtual Reality Prototypes
December 1, 2008, 12:00am PST
In this paper, the authors present a design evaluation system with visualization and interaction of mobile devices using virtual-reality-based prototypes which can be used to easily change design...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Simulation Models for Investigation of Multiuser Scheduling in MIMO Broadcast Channels
December 1, 2008, 12:00am PST
Spatial correlation is a result of insufficient antenna spacing among multiple antenna elements, while temporal correlation is caused by Doppler spread. This paper compares the effect of spatial...
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Whitepapers
Orbit Determination Accuracy Improvement for Geostationary Satellite With Single Station Antenna Tracking Data
December 1, 2008, 12:00am PST
An operational Orbit Determination (OD) and prediction system for the geostationary Communication, Ocean, and Meteorological Satellite (COMS) mission requires accurate satellite positioning...
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Whitepapers
Efficient LDPC-Based, Threaded Layered Space-Time-Frequency System With Iterative Receiver
December 1, 2008, 12:00am PST
The authors present a Low-Density Parity-Check (LDPC)-based, threaded layered space-time-frequency system with emphasis on the iterative receiver design. First, the Unbiased Minimum...
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Whitepapers
High Security FeRAM-Based EPC C1G2 UHF (860 MHz-960 MHz) Passive RFID Tag Chip
December 1, 2008, 12:00am PST
The Metal-Ferroelectric-Metal (MFM) capacitor in the Ferroelectric Random Access Memory (FeRAM) embedded RFID chip is used in both the memory cell region and the peripheral analog and digital...
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Whitepapers
A Two-Stage Radix-4 Viterbi Decoder for Multiband OFDM UWB Systems
December 1, 2008, 12:00am PST
This paper presents a power efficient 64-state Viterbi Decoder (VD) employing a two-stage radix-4 add compare-select architecture. A class of VD architectures is implemented, and their hardware...
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Whitepapers
Semijoin-Based Spatial Join Processing in Multiple Sensor Networks
December 1, 2008, 12:00am PST
This paper presents an energy-efficient spatial join algorithm for multiple sensor networks employing a spatial semijoin strategy. For optimization of the algorithm, the authors propose a GR-tree...
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Whitepapers
One-to-All Broadcasting of Odd Networks for One-Port and All-Port Models
December 1, 2008, 12:00am PST
Odd networks were introduced in the context of graph theory. However, their potential as fault-tolerant multiprocessor networks has been shown. Broadcasting is one of the most important...
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Whitepapers
Effective Multiplexing Method for Conditional Access System in Terrestrial DMB
December 1, 2008, 12:00am PST
This paper proposes a Conditional Access System (CAS) suitable for use in Terrestrial Digital Multimedia Broadcasting (T-DMB), based on an effective multiplexing method to provide encrypted T-DMB...
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Whitepapers
Model Adaptation Using Discriminative Noise Adaptive Training Approach for New Environments
December 1, 2008, 12:00am PST
A conventional environment adaptation for robust speech recognition is usually conducted using transform-based techniques. Here, the authors present a discriminative adaptation strategy based on a...
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Whitepapers
Mitigating the ICA Attack Against Rotation-Based Transformation for Privacy Preserving Clustering
December 1, 2008, 12:00am PST
The Rotation-Based Transformation (RBT) for privacy preserving data mining is vulnerable to the Independent Component Analysis (ICA) attack. This paper introduces a modified...
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Spectral Efficiency of WRAN Spectrum Overlay in the TV White Space
December 1, 2008, 12:00am PST
In this paper, the authors investigate the spectral efficiency of IEEE 802.22 Wireless Regional Area Network (WRAN) spectrum overlay when it is used in TV white space. Since 2004, when the FCC...
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Whitepapers
Differential Dual-Frequency Antenna for Wireless Communication
October 1, 2008, 12:00am PDT
A novel differential dual-frequency antenna using proximity coupling is proposed. Dual bands are realized by a slot in the ground plane. The lower resonant frequency is controlled by the slot in...
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Whitepapers
Measurement of a Customer Satisfaction Index for Improvement of Mobile RFID Services in Korea
October 1, 2008, 12:00am PDT
One of the ubiquitous technology fields that have received the most attention recently from technology communities worldwide is mobile radio frequency identification (RFID). Mobile handsets loaded...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Cross-Layer Cooperative Scheduling Scheme for Multi-Channel Hybrid Ubiquitous Sensor Networks
October 1, 2008, 12:00am PDT
The multi-scenario topology of multi-channel hybrid Ubiquitous Sensor Networks (USNs) is studied and a novel link auto-diversity cross-layer cooperative scheduling scheme is proposed in this...
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Whitepapers
Dual Addressing Scheme in IPv6 Over IEEE 802.15.4 Wireless Sensor Networks
October 1, 2008, 12:00am PDT
This paper proposes a Dual Addressing Scheme (DAS) for IPv6 over IEEE 802.15.4 Wireless Sensor Networks (WSN). DAS combines a global unicast address to cope with association link changes and node...
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Whitepapers
COSMOS: A Middleware for Integrated Data Processing Over Heterogeneous Sensor Networks
October 1, 2008, 12:00am PDT
With the increasing need for intelligent environment monitoring applications and the decreasing cost of manufacturing sensor devices, it is likely that a wide variety of sensor networks will be...
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Whitepapers
A Low-Voltage High-Performance CMOS Feedforward AGC Circuit for Wideband Wireless Receivers
October 1, 2008, 12:00am PDT
Wireless communication systems, such as WLAN or Bluetooth receivers, employ preamble data to estimate the channel characteristics, introducing stringent settling-time constraints. This makes the...
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Whitepapers
A Heuristic Method for Channel Allocation and Scheduling in an OFDMA System
October 1, 2008, 12:00am PDT
In this paper, a heuristic channel allocation and scheduling scheme is proposed. By comparing the size of the alternative-factor assessment, which is obtained by simple calculation, the authors...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Feature Compensation Combining SNR-Dependent Feature Reconstruction and Class Histogram Equalization
October 1, 2008, 12:00am PDT
In this paper, the authors propose a new histogram equalization technique for feature compensation in speech recognition under noisy environments. The proposed approach combines a...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Initial Timing Acquisition for Binary Phase-Shift Keying Direct Sequence Ultra-Wideband Transmission
August 1, 2008, 12:00am PDT
This paper presents a parallel processing searcher structure for the initial synchronization of a Direct Sequence Ultra-WideBand (DS-UWB) system, which is suitable for the digital implementation...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
SOI CMOS-Based Smart Gas Sensor System for Ubiquitous Sensor Networks
August 1, 2008, 12:00am PDT
This paper proposes a compact, energy-efficient, and smart gas sensor platform technology for Ubiquitous Sensor Network (USN) applications. The compact design of the platform is realized by...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Interoperable DRM Framework for Multiple Devices Environment
August 1, 2008, 12:00am PDT
As networks increase and cross-convergence occurs between various types of devices and communications, there is an increasing demand for interoperable service in the business environment and from...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Shorted Microstrip Patch Antenna Using Inductively Coupled Feed for UHF RFID Tag
August 1, 2008, 12:00am PDT
A very small patch-type RFID tag antenna (UHF band) using ceramic material mountable on metallic surfaces is presented. The size of the proposed tag is 25 mm×25 mm×3 mm. The impedance of the...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
RFID Tag Antenna Coupled by Shorted Microstrip Line for Metallic Surfaces
August 6, 2008, 12:00am PDT
This paper presents the design of a small and low-profile RFID tag antenna in the UHF band that can be mounted on metallic objects. The designed tag antenna, which uses a ceramic material as a...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
A Switchable Microstrip Patch Antenna for Dual Frequency Operation
August 1, 2008, 12:00am PDT
A novel design for equilateral-triangular microstrip antennas with switchable resonant frequency is proposed. For dual-frequency operation, the proposed design is achieved by loading a pair of...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
An Efficient Load Balancing Mechanism in Distributed Virtual Environments
August 1, 2008, 12:00am PDT
A Distributed Virtual Environment (DVE) allows multiple geographically distributed objects to interact concurrently in a shared virtual space. Most DVE applications use a non-replicated server...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Low-Power 512-Bit EEPROM Designed for UHF RFID Tag Chip
June 1, 2008, 12:00am PDT
Radio Frequency IDentification (RFID) is the technology to provide various communication services between objects by collecting, storing, and revising information regarding these objects by using...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Characteristic-Function-Based Analysis of MIMO Systems Applying Macroscopic Selection Diversity in Mobile Communications
June 1, 2008, 12:00am PDT
Multiple-Input Multiple-Output (MIMO) systems can provide significant increments in capacity; however, the capacity of MIMO systems degrades severely when spatial correlation among multipath...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Hyperelliptic Curve Crypto-Coprocessor over Affine and Projective Coordinates
June 1, 2008, 12:00am PDT
With the continuous evolution of information technology, security technology will become increasingly important for protecting critical information and enhancing the privacy of Internet users. An...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
A New Scan Partition Scheme for Low-Power Embedded Systems
June 1, 2008, 12:00am PDT
A new scan partition architecture to reduce both the average and peak power dissipation during scan testing is proposed for low-power embedded systems. In scan-based testing, due to the extremely...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
User-Friendly Personal Photo Browsing for Mobile Devices
June 1, 2008, 12:00am PDT
In this paper, a user-friendly mobile photo album system and albuming functions to support it are introduced. Stand-alone implementation in a mobile device is considered. The main idea of...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Efficient Media Synchronization Mechanism for SVC Video Transport Over IP Networks
June 1, 2008, 12:00am PDT
The scalable extension of H.264, known as Scalable Video Coding (SVC) has been the main focus of the Joint Video Team's work and was finalized at the end of 2007. Synchronization between media is...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Analysis of the Competitiveness of Broadband Over Power Line Communication in Korea
June 1, 2008, 12:00am PDT
This paper analyzes factors affecting the competitiveness of Broadband over Power Line Communication (BPLC) and predicts demand for the service, based on quantitative information about consumer...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Memory-Efficient Hypercube Key Establishment Scheme for Micro-Sensor Networks
June 1, 2008, 12:00am PDT
A micro-sensor network is comprised of a large number of small sensors with limited memory capacity. Current key-establishment schemes for symmetric encryption require too much memory for...
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Whitepapers
A Scheme to Increase Throughput in Framed-ALOHA-Based RFID Systems With Capture
June 1, 2008, 12:00am PDT
In this paper, a scheme to increase the throughput of RFID systems is presented, which considers the capture effect in the context of framed ALOHA protocol. Under the capture model in which the...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Compact Dipole Antenna for Terrestrial Digital Multimedia Broadcasting Service
June 1, 2008, 12:00am PDT
Rapid progress in TV broadcasting technology offers high quality broadcasting services for portable devices, such as the mobile phone, electronic notebook, and PDA. In particular, Terrestrial...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Technique for Estimating the Number of Active Flows in High-Speed Networks
April 1, 2008, 12:00am PDT
The online collection of coarse-grained traffic information, such as the total number of flows, is gaining in importance due to a wide range of applications, such as congestion control and network...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Scalable Network Architecture for Flow-Based Traffic Control
April 1, 2008, 12:00am PDT
Many control schemes have been proposed for flow-level traffic control. However, flow-level traffic control is implemented only in limited areas such as traffic monitoring and traffic control at...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Soft-State Bandwidth Reservation Mechanism for Slotted Optical Burst Switching Networks
April 1, 2008, 12:00am PDT
This paper proposes a novel transport network architecture for the Next Generation Network (NGN) based on the optical burst switching technology. The proposed architecture aims to provide...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Perceived Subjective Features of Software Components: Consumer Behavior in a Software Component Market
June 1, 2009, 12:00am PDT
Component-based software reuse has been generally regarded as a promising approach to improving software productivity and quality within software development. However, progress in component-based...
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Whitepapers
Multiband Microstrip-Fed Right Angle Slot Antenna Design for Wireless Communication Systems
June 1, 2009, 12:00am PDT
The steadily increasing popularity of Internet access and multimedia applications has driven a rapid development of wireless communication systems. It has been noted that a wireless communication...
Provided by Electronics and Telecommunication Research Institute
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Soft Combination Schemes for Cooperative Spectrum Sensing in Cognitive Radio Networks
June 1, 2009, 12:00am PDT
This paper investigates linear soft combination schemes for cooperative spectrum sensing in cognitive radio networks. The authors propose two weight-setting strategies under different basic...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Design of Balanced Dual-Band Bandpass Filter With Self-Feedback Structure
August 1, 2009, 12:00am PDT
The rapid development of wireless communication is creating extraordinary demand for dual-band Radio Frequency (RF) front-end solutions. Various dual-band filters have recently been proposed. The...
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A Weighted Scheduling Mechanism to Reduce Multicast Packet Loss in IPTV Service Over EPON
August 1, 2009, 12:00am PDT
In this paper, an Ordered Successive Interference Cancellation (OSIC) scheme is applied for Multiple-Input Multiple-Output (MIMO) detection in Ultra-WideBand (UWB) communication systems. The error...
Provided by Electronics and Telecommunication Research Institute
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Whitepapers
Wirelessly Synchronized One-Way Ranging Algorithm With Active Mobile Nodes
August 1, 2009, 12:00am PDT
In this paper, the authors propose a one-way ranging algorithm that is based on wireless synchronization with measured timestamps and clock frequency offsets. In their proposed algorithm, an...
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Whitepapers
Security Flaws in Authentication Protocols With Anonymity for Wireless Environments
August 1, 2009, 12:00am PDT
The emerging wireless networks require the design of new authentication protocols due to their dynamic nature and vulnerable-to-attack structure. Recently, Wu and others proposed a wireless...
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Whitepapers
Design and Performance Analysis of Emulator for Standard Conformance Test of Active RFID
August 1, 2009, 12:00am PDT
An active Radio Frequency IDentification (RFID) system has the advantages of a long identification distance and a good identification rate, overcoming passive RFID drawbacks. Therefore, interest...
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Design and Development of T-DMB Multichannel Audio Service System Based on Spatial Audio Coding
August 1, 2009, 12:00am PDT
In this paper, a Terrestrial Digital Multimedia Broadcasting (T-DMB) multichannel audio broadcasting system based on spatial audio coding is presented. The proposed system provides realistic...
Provided by Electronics and Telecommunication Research Institute
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Novel Equalization On-Channel Repeater With Feedback Interference Canceller in Terrestrial Digital Multimedia Broadcasting System
August 1, 2009, 12:00am PDT
In this paper, the authors propose a novel equalization On-Channel Repeater (OCR) with a feedback interference canceller (FIC) to relay terrestrial digital multimedia broadcasting signals in...
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An Ethernet Ring Protection Method to Minimize Transient Traffic by Selective FDB Advertisement
October 1, 2009, 12:00am PDT
The authors introduce an improved Ethernet ring protection method, selective Filtering DataBase (FDB) advertisement, to minimize traffic overshoot in the event of a failure or recovery. On the...
Provided by Electronics and Telecommunication Research Institute
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Dictionary Attack on Functional Transform-Based Cancelable Fingerprint Templates
October 1, 2009, 12:00am PDT
Recently, Ratha and others proposed a cancelable biometrics scheme which transforms an original fingerprint template into a new one using a noninvertible transformation. However, the authors show...
Provided by Electronics and Telecommunication Research Institute
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2.4 GHz WLAN InGaP/GaAs Power Amplifier With Temperature Compensation Technique
October 1, 2009, 12:00am PDT
Recently, the Wireless Local Area Network (WLAN) market has grown rapidly due to the increasing demand for high data rates. It requires a highly linear Power Amplifier (PA) because of a high...
Provided by Electronics and Telecommunication Research Institute
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A Highly Efficient GaAs HBT MMIC Balanced Power Amplifier for W-CDMA Handset Applications
October 1, 2009, 12:00am PDT
A highly efficient and compactly integrated balanced Power Amplifier (PA) for W-CDMA handset applications is presented. To overcome the size limit of a typical balanced PA, a bulky input divider...
Provided by Electronics and Telecommunication Research Institute
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Multi-Constrained Shortest Disjoint Paths for Reliable QoS Routing
October 1, 2009, 12:00am PDT
Finding link-disjoint or node-disjoint paths under multiple constraints is an effective way to improve network QoS ability, reliability, and so on. However, existing algorithms for such scheme...
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Distributed Borrowing Addressing Scheme for ZigBee/IEEE 802.15.4 Wireless Sensor Networks
October 1, 2009, 12:00am PDT
This paper proposes a DIstributed Borrowing Addressing (DIBA) scheme to solve problems of failure in address assignments resulting from limited tree depth and width when the distributed address...
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High-Speed Access Over Copper: Rate Optimization and Signal Construction
October 1, 2009, 12:00am PDT
This paper focuses on assessment and design of transmission systems for distribution of digital signals over standard Category-7A copper cables at speeds beyond 10 Gbps. The main contribution of...
Provided by Electronics and Telecommunication Research Institute
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QoS-Guaranteed Multiuser Scheduling in MIMO Broadcast Channels
October 1, 2009, 12:00am PDT
This paper proposes a new multiuser scheduling algorithm that can simultaneously support a variety of different Quality-of-Service (QoS) user groups while satisfying fairness among users in the...
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Fabrication of Transimpedance Amplifier Module and Post-Amplifier Module for 40 Gb/s Optical Communication Systems
December 1, 2009, 12:00am PST
For 40 Gb/s optical communication systems, high-gain and high-bandwidth optical receivers are required, which inevitably require optical component modules and electrical component modules. The...
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A Novel Reconfigurable Processor Using Dynamically Partitioned SIMD for Multimedia Applications
December 1, 2009, 12:00am PST
In this paper, the authors propose a novel reconfigurable processor using Dynamically Partitioned Single-Instruction Multiple-Data (DP-SIMD) which is able to process multimedia data. The SIMD...
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TRE+: Extended Tree-Based Routing Ethernet
February 1, 2010, 12:00am PST
Tree-based Routing Ethernet (TRE) is a recent Ethernet architecture that enables shortcut links to improve performance compared to spanning tree protocols. However, TRE can only use shortcuts that...
Provided by Electronics and Telecommunication Research Institute
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Fully Integrated HBT MMIC Series-Type Extended Doherty Amplifier for W-CDMA Handset Applications
February 1, 2010, 12:00am PST
A highly efficient linear and compactly integrated series-type Doherty Power Amplifier (PA) has been developed for wideband code-division multiple access handset applications. To overcome the size...
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Compact Planar Dual-Wideband Bandstop Filters With Cross Coupling and Open-Ended Stepped Impedance Resonators
February 1, 2010, 12:00am PST
This paper presents the design of a compact BandStop Filter (BSF) operating at two frequencies. The proposed BSF consists of Open-ended Stepped Impedance Resonators (OSIR) and an End-shorted...
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Performance of Selective Decode-and-Forward Relay Networks With Partial Channel Information
February 1, 2010, 12:00am PST
In this paper, closed-form approximations for outage probability and symbol error rate are presented for a selective decode-and-forward relay network with partial channel information. An...
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Dual-Port SDRAM Optimization With Semaphore Authority Management Controller
February 1, 2010, 12:00am PST
This paper proposes the Semaphore Authority Management (SAM) controller to optimize the Dual-Port SDRAM (DPSDRAM) in the mobile multimedia systems. Recently, the DPSDRAM with a shared bank...
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MC-MIPOG: A Parallel t-Way Test Generation Strategy for Multicore Systems
February 1, 2010, 12:00am PST
Combinatorial testing has been an active research area in recent years. One challenge in this area is dealing with the combinatorial explosion problem, which typically requires a very expensive...
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Design of an Internal Antenna With Near-Omnidirectional H-Plane Radiation Pattern Over Ultra-Wide Bandwidth
February 1, 2010, 12:00am PST
In this paper, an ultra-wideband internal antenna for use in mobile applications is proposed. The proposed antenna has symmetrical bi-arm structures printed on the top and bottom of the substrate,...
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Electronic Feedback System for Stabilization of Fiber Ring Resonator
February 1, 2010, 12:00am PST
The authors propose a simple technique to stabilize the optical output intensity of a fiber ring resonator. The electronic feedback circuit system, which consists of two voltage control...
Provided by Electronics and Telecommunication Research Institute
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Improvement of Ultra-Wideband Link Performance Over Bands Requiring Interference Mitigation in Korea
February 1, 2010, 12:00am PST
Ultra-WideBand (UWB) systems have witnessed a debate over whether they may cause interference to other existing and future narrowband systems sharing their band of operation. The Detect And Avoid...
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Harmonic Identification Algorithms Based on DCT for Power Quality Applications
February 1, 2010, 12:00am PST
The increasing demand for non-sinusoidal currents affects the quality of distribution networks. Harmonic detection is a crucial step in the cancellation of those components by active power...
Provided by Electronics and Telecommunication Research Institute
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Game Traffic Classification Using Statistical Characteristics at the Transport Layer
February 1, 2010, 12:00am PST
The pervasive game environments have activated explosive growth of the Internet over recent decades. Thus, understanding Internet traffic characteristics and precise classification have become...
Provided by Electronics and Telecommunication Research Institute
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Novel UWB Transceiver for WBAN Networks: A Study on AWGN Channels
February 1, 2010, 12:00am PST
A novel Ultra-WideBand (UWB) transceiver structure is presented to be used in Wireless Body Area Networks (WBANs). In the proposed structure, a data channel and a control channel are combined into...
Provided by Electronics and Telecommunication Research Institute
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A Low-Complexity 128-Point Mixed-Radix FFT Processor for MB-OFDM UWB Systems
February 1, 2010, 12:00am PST
Ultra-WideBand (UWB) systems supporting various data rates from tens of Mb/s to hundreds of Mb/s are very suitable for application to short range wireless communications because they can share the...
Provided by Electronics and Telecommunication Research Institute
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Rayleigh-Quotient and Iterative-Threshold-Test-Based Blind TOA Estimation for IR-UWB Systems
April 1, 2010, 12:00am PDT
This paper proposes a non-coherent blind Time-Of-Arrival (TOA) estimation scheme for impulse radio ultra-wideband systems. The TOA estimation is performed in two consecutive phases: the...
Provided by Electronics and Telecommunication Research Institute
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A New Architecture of Matched Filter for Chirp Spread Spectrum in IEEE 802.15.4a
April 1, 2010, 12:00am PDT
The authors propose a new matched filter architecture for chirp spread spectrum in IEEE 802.15.4a. By using relations among the four subchirps, the proposed architecture comprises four subfilters...
Provided by Electronics and Telecommunication Research Institute
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Ultra-small Form-Factor Helix on Pad-Type Stage-Bypass WCDMA Tx Power Amplifier Using a Chip-Stacking Technique and a Multilayer Substrate
April 1, 2010, 12:00am PDT
A fully integrated small form-factor HBT Power Amplifier (PA) was developed for UMTS Tx applications. For practical use, the PA was implemented with a well configured bottom dimension, and a CMOS...
Provided by Electronics and Telecommunication Research Institute
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High System Performance With Plasmonic Waveguides and Functional Devices
April 1, 2010, 12:00am PDT
The application of photonics in computing and information processing has been discussed over the past several decades. Impacted current computing systems consist of intra- and inter-chip...
Provided by Electronics and Telecommunication Research Institute
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Polarization-Diversity Cross-Shaped Patch Antenna for Satellite-DMB Systems
April 1, 2010, 12:00am PDT
A small reconfigurable patch antenna is proposed to achieve polarization diversity for digital multimedia broadcasting systems at 2.6 GHz. To obtain polarization diversity, a pair of on-slit PIN...
Provided by Electronics and Telecommunication Research Institute
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Analysis of Consumers' Choices and Time-Consumption Behaviors for Various Broadcasting and Telecommunication Convergence Services
April 1, 2010, 12:00am PDT
In this paper, the authors analyzed consumers' choices of various broadcasting and telecommunication convergence services and time consumption for chosen services by using survey data. A...
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Performance Analysis of Dynamic Spectrum Allocation in Heterogeneous Wireless Networks
April 1, 2010, 12:00am PDT
Increasing convergence among heterogeneous radio networks is expected to be a key feature of future ubiquitous services. The convergence of radio networks in combination with Dynamic Spectrum...
Provided by Electronics and Telecommunication Research Institute
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