Performance of cognitive radio Overlay Z-channel with trellis shaping and turbo decoding

Ahmed, A M and Sardar, S and Khan, Mohammed Zafar Ali (2016) Performance of cognitive radio Overlay Z-channel with trellis shaping and turbo decoding. In: 13th International Conference on Wireless and Optical Communications Networks (WOCN), 21-23 July 2016.

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Abstract

In this paper we implement a turbo based Overlay Cognitive radio Z-channel with Trellis shaping, where the primary and cognitive users transmits and receives concurrently, utilizing the same spectrum. We ensure that bit error rate (BER) performance of the Primary does not degrade even in the presence of cognitive user. We derive bit error rate BER curves for both users, and show significant improvement in the performance of primary even in the presence of cognitive user by implementing turbo decoding instead of Viterbi decoder. Simulation results show that turbo decoder provides a coding gain of 9.6dB for Primary and 8.7dB for cognitive user with out trellis shaping and 11.2dB total gain with Trellis shaping for cognitive user, where as conventional Viterbi decoder provides 1.8dB coding gain only.

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IITH Creators:
IITH CreatorsORCiD
Khan, Mohammed Zafar AliUNSPECIFIED
Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Decoding, Encoding, Receivers, Cognitive radio, Radio transmitters, Interference, Viterbi algorithm
Subjects: Others > Electricity
Others > Electronic imaging & Singal processing
Divisions: Department of Electrical Engineering
Depositing User: Team Library
Date Deposited: 06 Dec 2016 09:45
Last Modified: 26 Sep 2017 04:49
URI: http://raiith.iith.ac.in/id/eprint/2914
Publisher URL: https://doi.org/10.1109/VLSID.2016.81
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