摘要
为有效克服正交频分复用(OFDM)系统存在的不足,提高系统性能,将OFDM技术及单载波频域均衡(SC-FDE)技术分别与码分多址接入(CDMA)技术相结合,并在多输入多输出(MIMO)空间复用技术的高速率通信基础上,研究了相应的两种基带系统结构,讨论了系统所用的频域均衡算法及系数,最后给出性能仿真结果。结果表明,MIMO-SC-FDE-CDMA技术相结合能够更有效地提高系统性能,降低用户间干扰,有着良好的应用前景。
Aimming at disadvantages of Orthogonal Frequency Division Muhiplexing(OFDM), combining OFDM technology and Single Carrier - Frequency Domain Equalization (SC - FDE) technology with Code Division Multiple Access (CDMA) technology,and based on high frequency communication of Multiple Input Multiple Output (MIMO) architecture,architectures of the two baseband systems are studied. The frequency domain channel equalization and its coefficients are analyzed. The simulation results show that the MIMO - SC - FDE - CDMA systems have better performance.
出处
《现代电子技术》
2010年第5期5-8,共4页
Modern Electronics Technique
基金
国家自然科学青年基金项目(60901070)
关键词
多输入多输出
正交频分复用
单载波频域均衡
码分多址接入
multiple input multiple output
ortbogonal frequency division multiplexing
single carrier- frequency domain equalization
SC - FDE
code division multiple access