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Document Type : Latin Dissertation
Language of Document : English
Record Number : 151192
Doc. No : ET22984
Main Entry : Naveen Chandran
Title Proper : Hybrid ARQ with Parallel and Serial Concatenated Convolutional Codes for Next Generation Wireless Communications
Note : This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract : Hybrid FEC-ARQ systems combine the advantage of ARQ systems of obtaining highreliability with that of forward error correcting (FEC) systems of providing highthroughput. This research focuses on evaluating the currently used FEC encodingdecodingschemes (convolutional codes, turbo codes and serial concatenated codes) andimproving the performance of error control systems by incorporating these schemes in ahybrid FEC-ARQ environment. The first section of the thesis gives a comprehensivediscussion of the latest issues in wireless communications, nature of the wired andwireless channel, and various ARQ protocols.The next section introduces convolutional codes and Viterbi decoding as a stepping-stoneto the turbo coding scheme. Turbo codes are parallel concatenated convolutional codes(PCCCs) separated by an interleaver, and have shown to perform at very high-energyefficiencies - about 0.5 dB away from the Shannon capacity. An iterative soft-input softoutput(SISO) maximum-a-posteriori (MAP)-....,....-...,..tested for theQ1 PC1 bus cardBoth these projects mere sofixare des elopment efforts tonards contributing to dlfferentaspects of Roboucs and lZ1echatronics projects m the Controls and Roboucs Group..
Subject : Electericl tess
: برق
electronic file name : TL46213.pdf
Title and statement of responsibility and : Hybrid ARQ with Parallel and Serial Concatenated Convolutional Codes for Next Generation Wireless Communications [Thesis]
 
 
 
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