室外真实MIMO信道下STBC MC-CDMA系统的性能
Performance of STBC MC-CDMA systems over outdoor realistic MIMO channels
摘要：
本文研究了在室外实际下行链路中使用两个发射和接收天线的正交空时分组编码MC-CDMA系统。假设在发射机处没有信道状态信息，我们比较了几种线性单用户检测和扩频方案，有或没有信道编码，实现1-2比特/s/Hz的频谱效率。不同的结果表明，空间分集显着提高MC-CDMA系统的性能，并允许不同的码片映射，而不会显着降低性能。此外，全球系统表现出良好的权衡之间的复杂性在移动站和性能。然后，Alamanti的STBC MC-CDMA方案从频率和空间分布中获得充分的益处，并且可以被认为是第4代移动无线电系统的空中接口下行链路的非常现实和有前途的候选方案。
英文摘要：
The paper deals with orthogonal space-time block coded MC-CDMA systems in outdoor realistic downlink scenarios with up to two transmit and receive antennas. Assuming no channel state information at the transmitter, we compare several linear single-user detection and spreading schemes, with or without channel coding, achieving a spectral efficiency of 1-2 bits/s/Hz. The different results obtained demonstrate that spatial diversity significantly improves the performance of MC-CDMA systems, and allows different chip-mapping without notably decreasing performance. Moreover, the global system exhibits a good trade-off between complexity at mobile stations and performance. Then, Alamouti's STBC MC-CDMA schemes derive full benefit from the frequency and spatial diversities and can be considered as a very realistic and promising candidate for the air interface downlink of the 4/sup th/ generation mobile radio systems.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
