摘要
针对宽带无线通信系统对高可靠性和高速率数据传输的要求,本文介绍了一种基于LDPC码的MIMO-OFDM宽带无线通信系统模型。结合MIMO-OFDM的软判决检测和LDPC码的软对数似然比译码,本文给出了系统的一种低复杂度高性能的联合迭代检测译码算法。仿真结果表明,采用该译码方案对系统的性能有明显改善。
Aiming at the requirement for reliability and very high data rate transmission for broadband wireless communication, a LDPC coded MIMO-OFDM system model was proposed. Combining MIMO-OFDM soft-decision detection with LDPC code soft log likelihood ratio decoding,a joint iterative detection and decoding algorithm with low complexity and high performance was presented. The simulation results show that the algorithm can improve system performance substantially.
出处
《北京电子科技学院学报》
2005年第4期44-47,共4页
Journal of Beijing Electronic Science And Technology Institute
