【作者】 张鹏； 张庆荣；

【Author】 Zhang Peng~1,Zhang Qingrong~(1,2) ~1 School of Communication and Control Engineering,Jiangnan University,Wuxi 214122,China; ~2 School of Information Engineering,Beijing University of Posts and Telecommunieations,Beijing 100876,China

【机构】 江南大学通信与控制工程学院；

【摘要】 MC-CDMA系统由于用户容量大、频谱利用率高、数据速率高等特点,近年来在通信系统中得到越来越多的重视,如何克服多址干扰问题仍然是提高系统容量的关键问题之一。本文结合序贯检测思想来抑制多址干扰。该算法应用于MC-CD- MA系统的多用户检测中,检测器能在检测性能和计算复杂度之间取得很好的平衡。本文在对接收机信号进行组成分析的基础上。阐述了序贯检测算法在多用户检测中的实现过程,并通过仿真实例证明了基于序贯检测算法的多用户检测器的性能优势,最后展望该课题的发展方向。更多还原

【Abstract】 In recent years MC-CDMA system have received more and more attention to in the communication system because of the large capacity,high utilization of the spectrum and high data rate.How to overcome the problem of MAI is one of the key issues to improve the capacity of the system.This paper uses the idea of sequential detection to resist MAI.Applying the sequential detection to multi-user detection can find a balance between the performance of the detector and its computational complexity.In this paper, the signals of the receiver have been analyzed first,and then it is shown how it is used for multi-user detection.As a result,the per- formance advantage of the sequential detection algorithm in the multi-user detection is observed in simulations.Further studies are mentioned in the conclusion part.更多还原