Design of LDPC Coded Recursive MSK Systems

摘要：

This paper investigates a low-density parity-check(LDPC) coded recursive minimum shift keying (MSK) schemewhen the receiver employs iterative decoding and demodulation.Since the recursive continuous phase encoder (RCPE) of MSKcan be expressed by a bipartite graph, the overall system can beviewed as a concatenation of two Tanner graphs. By analyzingthe error correlation in the MSK demodulator and the overallloop in the joint Tanner graph, we show that the error correlationhas a great impact on the performance of the iterative systemwhen the LDPC codes are not well designed and interleavers arenot employed. We develop a new design rule of LDPC codesto reduce the impact of the error correlation on the systemperformance while without interleavers. Simulation results showthat the proposed design rule can reduce the impact of the errorcorrelation in a simple and effective way.

作者: Jianzhong Huang Shuling Che Baoming Bai Xinmei Wang

作者单位: State Key Lab of Integrated Service Networks Xidian University, Xi’an, China.

会议类型: 国际会议

会议名称: 2007年通信、电路与系统国际会议(2007 International Conference on Communications,Circuits and Systems Proceedings)

会议地点: 日本福冈

会议语种:英文

在线出版日期: 2007-07-11（万方平台首次上网日期，不代表论文的发表时间）