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Institute of Electrical & Electronic Engineers
(11333 results)-
Whitepapers
Jamming-Resilient Dynamic Spectrum Access for Cognitive Radio Networks
April 26, 2011, 12:00am PDT
Many spectrum sensing and access schemes have been proposed in recent years for Opportunistic Spectrum Access (OSA). Most of them model the spectrum sensing and access problem as a Partially...
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Whitepapers
EVSE: An Efficient Vehicle Social Evaluation Scheme With Location Privacy Preservation for Vehicular Communications
April 26, 2011, 12:00am PDT
Social-aware data diffusion can improve the dissemination performance in Vehicular Ad hoc NETworks (VANETs). However, if some vehicles lie their social claims and vehicle location information is...
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Whitepapers
EDJam: Effective Dynamic Jamming Against IEEE 802.15.4-Compliant Wireless Personal Area Networks
April 26, 2011, 12:00am PDT
Jamming is one of the most important methods of attack to deprive or reduce the communication service of wireless personal area networks WPANs. Most existing jamming attacks can cause negative...
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Whitepapers
Certificateless Secure Upload for Drive-Thru Internet
April 26, 2011, 12:00am PDT
Vehicular ad hoc networks have attracted a lot of attention in recent years, in either vehicle-to-vehicle or vehicle-to-infrastructure scenarios. In this paper, the authors focus on the latter,...
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Whitepapers
A Novel Scheme for a Fast Channel Change in Multicast IPTV System
April 26, 2011, 12:00am PDT
Now-a-days, television is the most popular media for informing and entertaining in the world. The generalization of IPTV brings advantages in terms of IP service convergence, but has also some...
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Whitepapers
Heterogeneous QoS Video Broadcasting With Optimal Joint Layered Video and Digital Fountain Coding
April 26, 2011, 12:00am PDT
Heterogeneous QoS video broadcast over wireless network is a challenging problem, where the demand for better video quality needs to be reconciled with different display size, channel condition...
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Whitepapers
Design and Evaluation of Application-Cooperative Bandwidth On-Demand Network With Dynamic Reconfiguration for Gbps-Class HDTV Transmission
April 26, 2011, 12:00am PDT
An application-cooperative Bandwidth on-Demand (BoD) network with dynamic adaptive reconfiguration for Gbps-class HDTV transmission applications is presented. For high-bandwidth data transmission,...
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Whitepapers
Controlling Retransmission Rate for Mitigating SIP Overload
April 26, 2011, 12:00am PDT
Recent server collapse in carrier networks (e.g., Skype outage) indicates that message retransmissions triggered by various SIP timers make the overload worse. The built-in overload control...
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Whitepapers
Low-Density Generator Matrix Codes for IP Packet Video Streaming With Backward Compatibility
April 26, 2011, 12:00am PDT
In this paper, the authors propose a method of constructing packet-level LDGM codes that offer backward compatibility with conventional viewing devices. Their proposed method makes it possible to...
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Whitepapers
Location-Aided Routing Using Image Representation for Wireless Sensor Networks
April 26, 2011, 12:00am PDT
Wireless Sensor Networks (WSN) are usually used in hostile environments to collect information. The sensors usually get their energy from batteries. It is a crucial point for the live-span of the...
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Whitepapers
Performance of the File Delivery Protocols Over Mobile TV Interactive Channels
April 26, 2011, 12:00am PDT
The recent IP-based mobile TV standards, such as DVB-IPDC and OMA BCAST, employ both unidirectional broadcast networks and mobile interactive networks for hybrid service delivery. For these mobile...
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Whitepapers
A Smart Information Sharing Architecture in a Multi-Access Network, Multi-Service Environment
April 26, 2011, 12:00am PDT
In a multi-network environment, users can receive services via several networks, protocols, and connected devices. These services are usually bound to their specific technology and often limited...
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Whitepapers
Towards Unbiased Sampling of Online Social Networks
April 26, 2011, 12:00am PDT
Unbiased sampling of Online Social Networks (OSNs) makes it possible to get accurate statistical properties of large-scale OSNs. However, the most used sampling methods, Breadth-First-Search (BFS)...
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Whitepapers
QoS-Aware Service Redeployment in Cloud
April 26, 2011, 12:00am PDT
Service composition is a useful technology to achieve dynamic requests. But in cloud, the cloud provider should guarantee the QoS of the user request as well. Previous work investigated how to...
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Whitepapers
Impact of Scheduling and Dropping Policies on the Performance of Vehicular Delay-Tolerant Networks
April 26, 2011, 12:00am PDT
Vehicular Delay-Tolerant Networks (VDTNs) are a disruptive network architecture based on delay-tolerant network paradigm, gathering contributions from opportunistic and cooperative networks, and...
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Whitepapers
Cross-Layer Design for Video Replication Strategy Over Multihop Wireless Networks
April 26, 2011, 12:00am PDT
In this paper, the authors propose a cross-layer optimization approach for replication of video streaming over multi-hop wireless network by jointly taking into account application, network,...
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Whitepapers
Capacity Achieving Modulation for Fixed Constellations With Average Power Constraint
April 26, 2011, 12:00am PDT
The capacity achieving Probability Mass Function (PMF) of a finite signal constellation with an average power constraint is in most cases non-uniform. A common approach to generate non-uniform...
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Whitepapers
Constellation Shaping for Bit-Interleaved Coded APSK
April 26, 2011, 12:00am PDT
This paper considers a technique for shaping a turbo-coded Amplitude-Phase Shift Keying (APSK) constellation. After bit-interleaving, a subset of the bits output by a binary turbo encoder are...
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Whitepapers
On the Performance of BICM With Trivial Interleavers in Nonfading Channels
April 26, 2011, 12:00am PDT
Recent results have shown that the performance of Bit-Interleaved Coded Modulation (BICM) using convolutional codes in non-fading channels can be greatly improved if the Bitlevel Interleaver takes...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
MDS Code Based Signal Space Diversity Techniques With Fast Decoding
April 26, 2011, 12:00am PDT
In wireless communication systems, signal space diversity techniques are usually adopted to combat channel fading by exploiting time diversity, frequency diversity, spatial diversity or a...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
The E8 Lattice and Error Correction in Multi-Level Flash Memory
April 26, 2011, 12:00am PDT
While single-level flash memory stores a single bit per memory cell, data density can be increased by using two, three or more bits per cell. Along with this increase in density, the influence of...
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Whitepapers
Multicast Achievable Rate Region of Deterministic Broadcast Channel
April 26, 2011, 12:00am PDT
In this paper, the authors address the problem of multicasting individual and common information from a single transmitter (source) to multiple receivers (destinations). They consider the general...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Coordinated Max-Min SIR Optimization in Multicell Downlink - Duality and Algorithm
April 26, 2011, 12:00am PDT
Typical formulations of max-min weighted SIR problems involve either a total power constraint or individual power constraints. These formulations are unable to handle the complexities in multicell...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Throughput Analysis of Buffer-Constrained Wireless Systems in the Finite Blocklength Regime
April 26, 2011, 12:00am PDT
In this paper, wireless systems operating under queueing constraints in the form of limitations on the buffer violation probabilities are considered. The throughput of wireless systems operating...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Effective Capacity Analysis for Multi-Rate Relay Channels Exploiting Adaptive Cooperative Diversity
April 26, 2011, 12:00am PDT
Aiming at improving the QoS performance over fading channels, this paper presents an analysis of the effective capacity for a relay-assisted communication system which utilizes a cooperative...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Max-Min Greedy Interference Alignment on Linear Deterministic K-User Interference Channels
April 26, 2011, 12:00am PDT
The authors explore an algorithmic approximation of achievable lower bounds for the generalized degrees of freedom on finite-field linear deterministic K-user interference channels. With a...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Low Complexity MIMO Precoding Codebooks From Orthoplex Packings
April 26, 2011, 12:00am PDT
A construction of Grassmannian packings related to representation theory is applied to build implementation-friendly MIMO precoding codebooks when the number of transmit antennas is a power of a...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
On the Diversity and Multiplexing Tradeoff in MIMO Fading Channels With Two-Way Training and Power Control
April 26, 2011, 12:00am PDT
The authors analyze the achievable Diversity-Multiplexing Tradeoff (DMT) in MIMO fading channels with two-way channel training. They first consider a typical training scenario, where the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Non-Memoryless Analog Network Coding in Two-Way Relay Channel
April 26, 2011, 12:00am PDT
Physical-layer Network Coding (PNC) can significantly improve the throughput of two-way relay channels. An interesting variant of PNC is Analog Network Coding (ANC). Almost all ANC schemes...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Optimal Packet Scheduling in a Broadcast Channel With an Energy Harvesting Transmitter
April 26, 2011, 12:00am PDT
In this paper, the authors investigate the transmission completion time minimization problem in a two-user Additive White Gaussian Noise (AWGN) broadcast channel, where the transmitter is able to...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Clustered Multicell Joint Decoding Under Cochannel Interference
April 26, 2011, 12:00am PDT
Multicell Joint Decoding (MJD) has been widely studied during the last decades as a new communication paradigm which can overcome the interference-limited nature of cellular systems. From a...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Analysis of Network Throughput Dynamics With Viscoelastic Material Model
April 26, 2011, 12:00am PDT
Network throughput of the best-effort networks as typified by the Internet and wireless networks is often insufficient for multimedia communication, and it spoils the quality of communication....
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Algorithm With Linear Computational Complexity for Batch Scheduling in OBS Networks
April 26, 2011, 12:00am PDT
In Optical Burst Switching (OBS) networks, packets are aggregated at the edge nodes to form transmission units called bursts. A control packet is transmitted out-of-band, ahead of the burst so...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Context-Aware Resource Allocation to Improve the Quality of Service of Heterogeneous Traffic
April 26, 2011, 12:00am PDT
By supporting advanced multimedia applications and multitasking, recent Smartphone operation systems offer great functionality but make these devices even more difficult to serve. Now, network...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Decentralized Scheduling of Bursty Workload on Computing Grids
April 26, 2011, 12:00am PDT
Bursty workloads are often observed in a variety of systems such as grid services, multi-tier architectures, and large storage systems. Studies have shown that such burstiness can dramatically...
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Whitepapers
Optimization of OSPF Link Weight to Minimize Worst-Case Network Congestion Against Single-Link Failure
April 26, 2011, 12:00am PDT
A key traffic engineering problem in the Open Shortest Path First (OSPF)-based network is the determination of optimal link weights. From the network operators' point of view, there are two...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Poor, Good Enough or Even Better- Bridging the Gap Between Acceptability and QoE of Mobile Broadband Data Services
April 26, 2011, 12:00am PDT
Due to the accelerating uptake of mobile broadband services, Quality of Experience (QoE) assessment and optimization for wireless networks has become a topic of vital importance. In this field,...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Competition Analysis of Adaptive Incentive Protocols for P2P Networks
April 26, 2011, 12:00am PDT
Incentive protocols are crucial for enhancing contribution and cooperation among nodes in P2P networks. In this paper, the authors consider an analytical framework wherein peers learn the gains of...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Heuristics for Joint Optimization of Monitor Location and Network Anomaly Detection
April 26, 2011, 12:00am PDT
To reduce monitoring cost, the number of monitors to be deployed have to be minimized and the overhead of monitoring flows on the underlying network have to be reduced. In a recent work, the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Avoiding Speedup From Bandwidth Overhead in a Practical Output-Queued Packet Switch
April 26, 2011, 12:00am PDT
The authors study a time-slotted and synchronous output-queued switch that uses packet concatenation to reduce bandwidth overhead, or CS-OQ switch. The CS-OQ switch avoids memory speedup through...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Indoor Relative Localization With Mobile Short-Range Radar
March 16, 2009, 12:00am PDT
The aim of this paper is to propose a novel indoor positioning technique operated without any infrastructure by use of radar sensors. In this paper, the system which utilizes relative velocity...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Robust Localization on Non-Planar Surfaces
March 16, 2009, 12:00am PDT
Local positioning systems are valuable for a range of applications where the Global Positioning System (GPS) is unavailable or unreliable. In this paper work is presented on accurate tracking of...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Novel Approach to Indoor RSSI Localization by Automatic Calibration of the Wireless Propagation Model
March 16, 2009, 12:00am PDT
The authors propose a novel localization algorithm of mobile sensors based on wireless sensor networks providing RSSI measurements between the mobile and the fixed sensors (anchors) in the...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Interference Analysis Between On-the-Move Users and GEO Satellites
March 16, 2009, 12:00am PDT
The authors consider on the move satellite systems with geostationary satellites. Using the antenna pointing distribution of Weerackody and Gonzalez, they derive tight upper and lower bounds of...
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Whitepapers
Multicast Transmission Optimization Over Hybrid DVB-SH Systems
March 16, 2009, 12:00am PDT
Research interest related to hybrid networks for mobile users has rapidly evolved in order to extend service to all users. In particular, DVB-SH provides an efficient way of carrying multimedia...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Cost-Efficient Design of Hybrid Network for Video Transmission in Tropical Areas
March 16, 2009, 12:00am PDT
This paper aims at providing different cost-efficient solutions for the channel impairments in tropical areas. In order to extend service to isolated areas, the authors propose hybrid architecture...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Design of a GPS and Galileo Multi-Frequency Front-End
March 16, 2009, 12:00am PDT
GNSS platforms such as the American Global Positioning System (GPS) or the Russian GLONASS system are being continuously updated with new satellites offering new signals, new frequencies and new...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Mixture Particle Filter for Low Cost INS/Odometer/GPS Integration in Land Vehicles
March 16, 2009, 12:00am PDT
Global Positioning System (GPS) is currently the common solution for land vehicle positioning. However, GPS signals may suffer from blockage in urban canyons and tunnels, and the positioning...
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Whitepapers
A New GNSS Synchronization Scheme
March 16, 2009, 12:00am PDT
Due to multiple side-peaks in the Binary Offset Carrier (BOC) autocorrelation function, BOC signal synchronization is one of the most challenging tasks for Global Navigation Satellite Systems...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Capacity Evaluation of a SIMO Satellite System at L, S and Ku Bands
March 16, 2009, 12:00am PDT
Multiple-Input-Multiple-Output (MIMO) techniques have emerged as one of the most significant breakthroughs in modern terrestrial digital communications, due to its promise of very high data rates....
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Whitepapers
A Comparison of Multicast Adaptive Techniques in Reliable Delivery Over GEO Satellite Networks
March 16, 2009, 12:00am PDT
In this paper, the authors compare two multicast adaptive techniques for reliable data delivery in GEO satellite networks. Specifically, a channel-aware scheduling algorithm is compared with a...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Propagation Impairment Countermeasures in Mobile Stratospheric Operating Environment
March 16, 2009, 12:00am PDT
The efficiency of wireless communication systems largely depends on proper understanding of propagation impairments and the design of suitable countermeasures, taking into account physical causes...
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Whitepapers
A Study of Multiple Access Schemes for Wireless Sensor Network Applications Via High Altitude Systems
March 16, 2009, 12:00am PDT
In this paper, the authors investigate the performance of a multiple access scheme based on Orthogonal Frequency-Division Multiplexing (OFDM) in High Altitude Platform (HAP) system for Wireless...
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Whitepapers
IEEE 802.11 Distance Estimation Based on RTS/CTS Two-Frame Exchange Mechanism
March 16, 2009, 12:00am PDT
The addition of positioning capabilities to widespread communications such as IEEE 802.11 compliant networks could open up interesting markets, in particular if a low-cost hardware has to be added...
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Whitepapers
Cooperative Positioning for the Converged Networks
March 16, 2009, 12:00am PDT
The wireless cooperative positioning scheme based on information fusion is proposed in this paper. The scheme combines large-scale TOA and small-scale distance measured in the converged networks....
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A New Neighbor Discovery Scheme Based on Spatial Correlation of Wireless Channel
March 16, 2009, 12:00am PDT
The authors propose a new neighbor discovery scheme for cellular communication systems that utilizes the Azimuth Spread (AS), Delay Spread (DS) and shadow fading of a Mobile Station (MS). Given...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Prior Models for Indoor Super-Resolution Time of Arrival Estimation
March 16, 2009, 12:00am PDT
The authors propose a scheme for super-resolution estimation of the time of arrival of a radio signal which makes use of a prior model of the radio propagation conditions. The method is based on...
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Whitepapers
System Capacity Analysis for High-Precision Radiolocation in the 5.8 GHz ISM Band
March 16, 2009, 12:00am PDT
Quality of Service (QoS) is a prevalent issue in communication systems, but an often neglected aspect of local positioning. In this paper, the authors present a QoS architecture for the...
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Whitepapers
Approximate Maximum Likelihood Mobile Localization Using Scatterer Information
March 16, 2009, 12:00am PDT
A novel single base station based localization technique is proposed. Starting from the probability density function of the scatterers' distribution around the mobile station, the authors apply...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
An RSSI-Based MAP Localization Method With Channel Parameters Estimation in Wireless Sensor Networks
March 16, 2009, 12:00am PDT
This paper proposes a Received Signal Strength Indicator (RSSI)-based Maximum A Posteriori (MAP) localization method with channel parameters estimation in wireless sensor networks. The proposed...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
A Scheme for Learning User Preferences: Enabling Personalisation in Cognitive Wireless Systems
March 16, 2009, 12:00am PDT
The continuous evolution of wireless systems has resulted in a number of new and powerful wireless networking standards. The concept of Beyond the Third Generation Systems (B3G) emerged in an...
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Whitepapers
Bayesian Tracking in Cooperative Localization for Cognitive Radio Networks
March 16, 2009, 12:00am PDT
In this paper, the authors consider cooperative localization and tracking of Primary Users (PU) in a cognitive radio network using Bayesian techniques. They use particle filtering methods to track...
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Whitepapers
Spectrum Availability in Indoor Locations for Opportunistic Spectrum Access in Dense Urban Scenarios
March 16, 2009, 12:00am PDT
This paper analyses the possibility to exploit Opportunistic Spectrum Access (OSA) for short-range radio communication systems within indoor locations in dense urban areas. In particular,...
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Whitepapers
Light Cognitive Radio Enabled Flexible Spectrum Usage in Local Area Deployment
March 16, 2009, 12:00am PDT
In this paper, the authors propose a mechanism to enable Flexible Spectrum Usage (FSU) in local area indoor deployment scenario with several operators in the given geographical area. The proposed...
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Whitepapers
Low Complexity FFT Based Spectrum Sensing in Bluetooth System
March 16, 2009, 12:00am PDT
In this paper, the authors propose a complexity reduced spectrum sensing technique for Bluetooth to find channels free from the use of other communication devices in 2.4 GHz ISM band. By...
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Whitepapers
Double Thresholds Based Cooperative Spectrum Sensing Against Untrusted Secondary Users in Cognitive Radio Networks
March 16, 2009, 12:00am PDT
Spectrum sensing is an essential mechanism in a cognitive radio network. However, the detection performance will be greatly degraded when few untrusted secondary users exist which can be...
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Whitepapers
High-Sensitivity Carrier Sensing Using Overlapped FFT for Cognitive Radio Transceivers
March 16, 2009, 12:00am PDT
A noise suppression technique using overlapped FFT for carrier sensing of cognitive radio is proposed. The energy detection method is modified. A broadband signal is FFTed and the averaged power...
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Whitepapers
Context Learning and Configuration Selection for Cognitive Device Management
March 16, 2009, 12:00am PDT
According to the B3G concept, diverse Radio Access Technologies (RATs) can converge into one composite radio environment, where the user is "always best connected" and can move between the various...
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Whitepapers
Inter-Operator Dynamic Spectrum Selection in UMTS
March 16, 2009, 12:00am PDT
Dynamic and flexible spectrum management schemes can improve spectrum utilization efficiency and hence are promising approaches to satisfy the increasing demand for radio spectrum. This paper...
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Whitepapers
Spectral Efficiency Analysis in OFDM and OFDM/OQAM Based Cognitive Radio Networks
March 16, 2009, 12:00am PDT
The future wireless communication is expected to be able to improve the efficiency of spectrum usage. To solve the challenge of spectrum shortage, an innovative opportunistic spectrum access...
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Whitepapers
SINR Balancing Technique and its Comparison to Semidefinite Programming Based QoS Provision for Cognitive Radios
March 16, 2009, 12:00am PDT
Cognitive radio networks opportunistically operate in frequency bands that have been licensed to other networks. Therefore, communication between unlicensed users should ensure the interference...
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Whitepapers
Evaluation of Spectrum Occupancy in Spain for Cognitive Radio Applications
March 16, 2009, 12:00am PDT
Cognitive Radio (CR) has been identified as a promising solution to the so-called spectrum scarcity problem. The basic idea of this paradigm is to allow unlicensed users to access in an...
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Whitepapers
Spatial Spectrum Holes in Cognitive Radio With Relay Transmission
March 16, 2009, 12:00am PDT
In this paper, the authors propose a relay-assisted transmission scheme in Cognitive Radio (CR) to exploit spatial spectrum holes, which are generated by relay techniques. The proposed scheme...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Outage Probability Estimation for Licensed Systems in the Presence of Cognitive Radio Interference
March 16, 2009, 12:00am PDT
Cognitive Radios (CRs) improve spectral efficiency by transmitting unlicensed signals over licensed frequency bands. A key requirement for CRs is to limit the interference to the licensed system....
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
User Separation for OFDMA Uplink
March 16, 2009, 12:00am PDT
Separating user signals in the UpLink (UL) of an Orthogonal Frequency Division Multiple Access (OFDMA) system without access to the Subcarrier Assignment Scheme (SAS) is a challenging task, but it...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
Opportunistic Spectrum Access in Cognitive Radio System Employing Cooperative Spectrum Sensing
March 16, 2009, 12:00am PDT
In cognitive radio systems, as the sensing ability of single cognitive user is limited, the opportunistic spectrum access has to allow different cognitive users to cooperatively search for and...
Provided by Institute of Electrical & Electronic Engineers
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Whitepapers
WINNER Spectrum Sharing With Fixed Satellite Services
March 16, 2009, 12:00am PDT
The IST 6th framework WINNER project defines spectrum sharing techniques for future wireless communication systems. This paper addresses spectrum sharing capabilities between different radio...
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Whitepapers
Intra-Operator Inter-Mode Spectrum Sharing
March 16, 2009, 12:00am PDT
A new method for spectrum sharing for a single operator is presented. One operator with its frequency band divided into three bands is assumed: one central band for the TDD mode and two more in...
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Dynamic Spectrum Sharing Between Uplink and Relay-Assisted Downlink
March 16, 2009, 12:00am PDT
In a Frequency-Division-Duplex (FDD) system, uplink and downlink are allocated equal bandwidths. Due to the relative sparseness of uplink Internet traffic, the uplink spectrum is usually...
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Whitepapers
Cooperative Spectrum Sensing With Cluster-Based Architecture in Cognitive Radio Networks
March 16, 2009, 12:00am PDT
In cognitive radio networks, the limitation of control channel bandwidth is a challenge of cooperative spectrum sensing when the number of cognitive users becomes very large. Cluster-based...
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