Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/144379
Title: CHANNEL DETECTION AND DECODING ALGORITHMS
Authors: VINTU JOSE ALAPPAT
Keywords: Channel Detection, Decoding Algorithms, Joint Viterbi Detector Decoder
Issue Date: 5-Jan-2016
Citation: VINTU JOSE ALAPPAT (2016-01-05). CHANNEL DETECTION AND DECODING ALGORITHMS. ScholarBank@NUS Repository.
Abstract: THE JOINT VITERBI DETECTOR DECODER (JVDD) IS A NOVEL ALGORITHM PROPOSED THAT FUNCTIONALLY REPLACES THE ITERATIVE DETECTOR/DECODER IN THE CHANNEL. THE PROPOSED ALGORITHM PERFORMS DETECTION AND DECODING ON A SINGLE TRELLIS STRUCTURE AND IS OPTIMAL OVER AN ISI/AWGN CHANNEL WHEN THERE ARE SUFFICIENT COMPUTATIONAL RESOURCES. ALTHOUGH JVDD ALGORITHM IS OPTIMAL OVER AWGN/ISI CHANNEL THE NEED FOR MORE COMPUTATIONAL RESOURCES MAKES THE IMPLEMENTATION OF THESE DECODERS ON FPGA/ASIC MORE CHALLENGING. MY THESIS FOCUSES ON MANAGING THE PERFORMANCE/COMPLEXITY TRADE-OFF OF JVDD ALGORITHM. THE WORK PROPOSES TWO NOVEL ALGORITHMS NAMELY SOFT-JOINT VITERBI DETECTOR DECODER (SJVDD) AND ADAPTIVE-JOINT VITERBI DETECTOR DECODER (AJVDD) .THE WORK ON SJVDD INCORPORATES THE CONCEPT OF SOFT OUTPUT VITERBI ALGORITHM (SOVA) TO IMPROVE THE PERFORMANCE AND REDUCE THE COMPLEXITY OF THE EXISTING JVDD ALGORITHM. SIMILARLY AJVDD ALGORITHM INTRODUCES A NOVEL ADAPTIVE THRESHOLD TECHNIQUE TO REDUCE THE COMPLEXITY OF THE AL
URI: http://scholarbank.nus.edu.sg/handle/10635/144379
Appears in Collections:Master's Theses (Open)

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