摘要
基于多天线正交频分复用(MIMO-OFDM)系统提出了一种根据信道状态信息进行自适应比特交织的混合自动重传请求(HARQ)方案,它充分利用信道的状态信息对每次重传的比特进行交织来获得频率分集增益和平均各个比特间的可靠性。仿真结果表明,在Type III HARQ类型(包括Chase合并和部分冗余递增)下,该方案可以有效降低系统的误码率性能。
An adaptive bit interleaving scheme for hybrid automatic repeat request （HARQ） was proposed in multi-input multi-output orthogonal frequency division multiplexing （MIMO-OFDM） system. It fully utilizes the channel state information to interleave the bits at each transmission. So the frequency diversity can be obtained and bit reliabilities will be averaged to improve the decoding efficiency. Simulation results show that the proposed scheme effectively reduces the block error rate when type III HARQ （including Chase Combining and Incremental Redundancy） is applied.
出处
《中国电子科学研究院学报》
2007年第5期513-517,共5页
Journal of China Academy of Electronics and Information Technology
基金
国家自然科学基金项目(No.60572120)
