摘要
联合MAP多用户检测和信道译码的迭代多用户检测技术可显著提高多载波CDMA系统的容量和性能 ,本文给出了结合智能天线和迭代MAP多用户检测的Turbo时空多用户检测算法 ,该方法进一步提高了系统的性能 .Turbo时空多用户检测算法不仅极大减小了传统最优MAP多用户检测算法的运算量 ,而且 。
The system capacity and performance of MC-CDMA communication systems can be significantly enhanced by jointly employing MAP-based multiuser detection (MUD) and channel decoding techniques. In this paper, a Turbo space-time MUD based on the combinations of smart antennas and iterative MAP-based MUD is presented. The proposed method is featured as a novel technique for further improving the system capacity and performance. It is shown that the proposed Turbo space-time MUD algorithm can significantly reduce the computational complexity compared with the conventional optimal MAP-based MUD schemes. Furthermore, it is demonstrated that the performance of the proposed algorithm can approach that of a single user coded MC-CDMA system with an antenna array in both AWGN and frequency selective fading channels.
出处
《电子学报》
EI
CAS
CSCD
北大核心
2003年第4期487-493,共7页
Acta Electronica Sinica
基金
清华大学 985重点前瞻性研究项目
