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(5197 results)-
Whitepapers
Downlink Scheduling in Network MIMO Using Two-Stage Channel State Feedback
August 2, 2012 12:00am PDT
In this paper, the authors propose a user scheduling scheme which is based merely on the ergodic rate. They derive the ergodic rate of each user for their network MIMO system from the average...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Ergodic Capacity of Multi-User MIMO Systems Using Pilot-Based Channel Estimation, Quantized Feedback and Outdated Feedback as Well as User Selection
August 2, 2012 12:00am PDT
The authors derive the ergodic channel capacity of a closed-loop MIMO broadcast system under both Random User Selection (RUS) and Semi-orthogonal User Selection (SUS) principles, when considering...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Partitioned Vector Quantization for MU-MIMO Downlink Broadcasting
August 2, 2012 12:00am PDT
A practical and efficient vector quantization called Partitioned Vector Quantization (P-VQ) based non-linear precoder for MIMO downlink broadcasting channels has been analyzed in this paper. P-VQ...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Effects of Feedback Delay on the Performance of Multiple Relay Network Over Nakagami-M Fading Channels
August 2, 2012 12:00am PDT
This paper studies the effect of feedback delay on the performance of Amplify-and-Forward (AF) relay selection over Nakagami-m fading environment. Spatial diversity can be improved by employing...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
A Compressed HARQ Feedback for Device-to-Device Multicast Communications
August 2, 2012 12:00am PDT
An efficient receiving status feedback in multicast communications can improve the system performance considerably. In this paper, the authors propose a novel compressed Hybrid Automatic Repeat...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Feedback in LT Codes for Prioritized and Non-Prioritized Data
August 2, 2012 12:00am PDT
In this paper feedback in LT codes is investigated. The considered type of feedback is acknowledgments, where information on which symbols have been decoded is given to the transmitter. The...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Interference-Aware Random Beam Selection for Spectrum Sharing Systems
August 2, 2012 12:00am PDT
Spectrum sharing systems have been introduced to alleviate the problem of spectrum scarcity by allowing secondary unlicensed networks to share the spectrum with primary licensed networks under...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Influence of HARQ With Unreliable Feedback on the Throughput of UMTS LTE
August 2, 2012 12:00am PDT
In this paper, the impact of HARQ signaling errors caused by unreliable feedback on the throughput of communication systems like UMTS LTE is investigated. The authors derive analytical expressions...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Iterative Block Decision Feedback Equalizer for Time-Frequency Interleave Diversity Scheme
August 2, 2012 12:00am PDT
The Time-Frequency Interleave (TFI) diversity scheme for Single Carrier block transmission with Frequency Domain Equalization (SC-FDE) has been proposed. For single antenna wireless communication...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Stop-and-Wait Hybrid-ARQ Performance at IP Level Under Imperfect Feedback
August 2, 2012 12:00am PDT
The authors investigate several types of Stop and Wait HARQ schemes under imperfect feedback conditions. Performance is measured through the usual metrics, i.e. packet error rate, delay, and...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
A Novel Hybrid ARQ Scheme Based on LDPC Code Extension and Feedback
August 2, 2012 12:00am PDT
The design of an efficient hybrid Automatic Repeat reQuest (ARQ) scheme based on rate compatible Low Density Parity Check (LDPC) codes is considered. It has been shown that extending as well as...
Provided by: Institute of Electrical & Electronic Engineers
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Whitepapers
Adaptive Bit Allocation in Rateless Coded MISO Downlink System with Limited Feedback
August 2, 2012 12:00am PDT
Rateless coding is a new type of feed-forward incremental redundancy channel coding technique which can be incorporated with MIMO technology to exploit both the diversity and coding gain with...
Provided by: Institute of Electrical and Electronics Engineers
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Whitepapers
Analysing & Identifying SAAS for Development of a Project by Calculating Its Reputation
August 1, 2012 12:00am PDT
Assessing the quality of external software before integrating it in to the project development is very challenging now a day. As IT industry is moving towards newly evolving tool named...
Provided by: International Journal of Advanced Research in Computer Science and Software Engineering (IJARCSSE)
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Whitepapers
Microcontroller Based Anti-Theft Security System Using GSM Networks With Text Message as Feedback
August 1, 2012 12:00am PDT
Antitheft security system utilizes an embedded system design with Dual Tone Multi Frequency (DTMF) and a GSM to monitor and safeguard a car. It secures the car against theft. Upon activation, it...
Provided by: International Journal of Engineering Research and Development (IJERD)
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Whitepapers
Comparative Analysis of ADTCP and M-ADTCP: Congestion Control Techniques for Improving TCP Performance Over Ad-Hoc Networks
August 1, 2012 12:00am PDT
Identifying the occurrence of congestion in a Mobile Ad-hoc NETwork (MANET) is a major task. The inbuilt congestion control techniques of existing Transmission Control Protocol (TCP) designed for...
Provided by: Academy & Industry Research Collaboration Center
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Whitepapers
An Audio Haptic Tool for Visually Impaired Web Users
August 1, 2012 12:00am PDT
An application that functions as a browser has been created for visually impaired web users. It is distinctive from popular browsers such as Internet Explorer, Firefox and Google Chrome as it is...
Provided by: Journal of Computing
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Whitepapers
Ultra Encryption Standard (UES) Version-IV: New Symmetric Key Cryptosystem with Bit-Level Columnar Transposition and Reshuffling of Bits
August 1, 2012 12:00am PDT
The present paper is an extension of the previous work of the authors i.e. UES version-II and III. Roy et al recently developed few efficient encryption methods such as UES version-I, Modified...
Provided by: International Journal of Computer Applications
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Whitepapers
Bandwidth Extension of BJT Amplifier Using a Novel Cascade Topology
August 1, 2012 12:00am PDT
In any amplifier design, it is always necessary to give utmost attention to its frequency response analysis. While applying frequency response for some application it is also important to extend...
Provided by: Gauhati University
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Whitepapers
Voice Controlled Data Acquisition Car Based on Zigbee Technology
August 1, 2012 12:00am PDT
This paper is to design a voice controlled car and use it as a platform for obtaining feedback from a critically controlled environment. The system comprises of a user interface module and a...
Provided by: IOSR Journal of Engineering
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Whitepapers
Hybrid Message-Embedded Cipher Using Logistic Map
August 1, 2012 12:00am PDT
The proposed hybrid message embedded scheme consists of hill cipher combined with message embedded chaotic scheme. Message-embedded scheme using non-linear feedback shift register as non-linear...
Provided by: Academy & Industry Research Collaboration Center
