Iterative joint demodulation and decoding of Turbo coded DPSK signals over unknown phase channels

被引：0
|
作者：
Wu, Xiao-Fu [1 ]
Ling, Cong [1 ]
Lu, Jin [1 ]
机构：
[1] Inst. of Commun. Eng., Nanjing 210016, China
来源：
Tien Tzu Hsueh Pao/Acta Electronica Sinica | 2001年 / 30卷 / 01期
关键词：
Algorithms - Communication channels (information theory) - Computer simulation - Decoding - Demodulation - Iterative methods - Mathematical models - Phase shift keying - Turbo codes;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Iterative joint demodulation and decoding of Turbo coded DPSK (differential phase shift keying) signals over an AWGN channel with unknown phase is presented. Firstly, the symbol-by-symbol maximum a posteriori probability (MAP) algorithm for an unknown phase channel is derived and it is shown that the MAP algorithm can be implemented efficiently using forward and backward recursions through the trellis. Secondly, the equivalent channel model approach is adopted and highlighted for subsequent systems to further process the channel MAP's output. Finally, the principle of iterative joint demodulation and decoding is introduced. The efficiency of the proposed algorithm is approved by many simulations.
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页码：97 / 101
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