Bit-Interleaved Turbo-Coded over Wireless Channels
نویسندگان
چکیده
This paper presents an improved version of bit-interleaved turbo-coded modulation (BITCM) scheme designed for bandwidth efficient transmission over wireless channels. The proposed scheme consists to apply signal space diversity (SSD) to conventional BITCM and a rotated modulation. At the receiver side, an iterative demapping and decoding is proposed in order to optimize the error performance. Simulation results carried out on 2 bit/s/Hz 64QAM BITCM indicate that is possible to obtain a gain exceeding 0.5 dB at a BER = 10 compared to the classical 64-QAM BITCM scheme. It is also shown that, the error floor can be significantly lowered using SSD technique at a little cost in terms of system's complexity. [Afshin Shaabany, Fatemeh Jamshidi. Bit-Interleaved Turbo-Coded over Wireless Channels. Journal of American Science 2011;7(3):533-537]. (ISSN: 1545-1003). http://www.americanscience.org.
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