PERFORMANCE OF LDPC CODED FMT SYSTEMS OVER FREQUENCY SELECTIVE FADING CHANNEL

被引：0
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作者：
Li Qiang Bi Guangguo Du Peng National Mobile Communications Research Lab Southeast University Nanjing China [210096 ]
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来源：
JournalofElectronics | 2005年 / 06期
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中图分类号：
TN911 [通信理论];
学科分类号：
081002 ;
摘要：
<正>This paper proposes the Low Density Parity Check (LDPC) coded Filtered Mul-tiTone (FMT) systems with high-order modulation for the high data rate reliable transmission over frequency selective fading channel. For the purpose of accomplishing soft input soft output iterative decoding of LDPC codes, a new soft decision metric generation method is proposed, which obviates the need of the noise variance estimation, for M-PSK/M-QAM-type high-order modulation over frequency selective fading channel. Computer simulation indicates that, there is no performance loss with our new metric, but the complexity of implementation is reduced, and that the LDPC codes are effective to improve the Bit Error Rate (BER) of FMT in frequency selective fading channel.
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页数：6
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