LDPC Coded Bit Interleaved Orthogonal Modulation with Non-Coherent Detection

摘要：

In this paper, we investigate the design and optimization of low-density parity-check (LDPC) coded bit interleaved orthogonal modulation systems with non-coherent detection over flat Rayleigh fading channels. We show that,two different EXIT chart analysis aspects can be done for this system, but the conventional approach cannot be used to optimize the system. With the aid of our designed EXIT chart analysis scheme and the linear programming method, the degree distribution for the variable nodes of the adopted LDPC code is optimized. The EXIT chart analyses show that,after optimization, the performance of the designed system is very close to channel capacity, I.e. the gap between them is onlyabout 0.1dB, which is much closer than those proposed in the existing literatures. Simulation results are also presented with different code lengths, indicating that the performance of the proposed system can approach that predicted by EXIT chart analysis as the code length becomes infinite.

作者: Shuling Che Jianzhong Huang Baoming Bai Xinmei Wang

作者单位: Member, IEEE State Key Laboratory 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）