DocumentCode :
2772949
Title :
Superposition Coding Aided Bi-Directional Relay Transmission Employing Iteratively Decoded Self-Concatenated Convolutional Codes
Author :
Butt, Muhammad Fasih Uddin ; Zhang, Rong ; Ng, Soon Xin ; Hanzo, Lajos
Author_Institution :
Sch. of ECS., Univ. of Southampton, Southampton, UK
fYear :
2010
fDate :
16-19 May 2010
Firstpage :
1
Lastpage :
5
Abstract :
In this paper, we consider coding schemes designed for two nodes communicating with each other with the aid of a relay node, which receives information from the two nodes in the first time slot. At the relay node we combine a powerful Superposition Coding (SPC) scheme with Iteratively-Decoded Self-Concatenated Convolutional Codes (SECCC-ID), which exchange mutual information between each other. It is assumed that decoding errors may be encountered at the relay node. The relay node then broadcasts this information in the second time slot after re-encoding it, again, using a SECCC encoder. At the destination, an amalgamated SPC-SECCC block then detects and decodes the signal either with or without the aid of a priori information. Our simulation results demonstrate that the proposed scheme is capable of reliably operating at a low BER for transmission over both AWGN and uncorrelated Rayleigh fading channels. We compare the proposed scheme´s performance to a direct transmission link between the two sources having the same throughput. Additionally, the SPC-SECCC system achieves a low BER even for realistic error-infested relaying.
Keywords :
AWGN channels; Rayleigh channels; concatenated codes; convolutional codes; error statistics; iterative decoding; AWGN; BER; SECCC encoder; SECCC-ID; SPC scheme; amalgamated SPC-SECCC block; decoding errors; iteratively decoded self-concatenated convolutional codes; realistic error-infested relaying; relay node; superposition coding aided bidirectional relay transmission; transmission link; uncorrelated Rayleigh fading channels; AWGN; Bidirectional control; Bit error rate; Broadcasting; Convolutional codes; Fading; Iterative decoding; Mutual information; Relays; Throughput;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Vehicular Technology Conference (VTC 2010-Spring), 2010 IEEE 71st
Conference_Location :
Taipei
ISSN :
1550-2252
Print_ISBN :
978-1-4244-2518-1
Electronic_ISBN :
1550-2252
Type :
conf
DOI :
10.1109/VETECS.2010.5493939
Filename :
5493939
Link To Document :
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