摘要
MC CDMA接收机通过尽可能收集某一数据信号散布在所有子信道上的能量 ,来恢复该数据信号 ,因而分集合并技术对接收机误码率性能有决定性的影响 .文中讨论了MC CDMA的各种分集合并方式 ,并在移动通信下行链路模型下 ,通过计算机仿真 ,比较了不同的用户数和信噪比下的误码率性能 .得出次最小均方误差合并 (subMMSEC)具有良好应用前景的结论 .
The signal can be recovered by the MC CDMA receiver by collecting energy scattered in all subchannels. So a diversity combining method is crucial for the performance of the receiver. Various diversity combining methods of MC CDMA are discussed here, and their simulations and performnace comparison are presented with various user numbers and SNRs in the downlink of mobile communication. The conclusion that the subMMSEC is the most promising method is obtained.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2002年第5期664-668,共5页
Journal of Xidian University
基金
国家部委预研基金资助项目 (G0 0 0 1C66)
