一种阵列天线与干扰抵消技术相结合的宽带CDMA接收机  

A Wide-Band CDMA Receiver of Adaptive Antenna Arrays Combined with Interference Cancellation

作　　者：颜永庆[1] 赵春明[1] 尤肖虎[1] 

机构地区：[1]东南大学移动通信国家重点实验室,江苏南京210096

出　　处：《应用科学学报》2005年第3期225-229,共5页Journal of Applied Sciences

摘　　要：提出了一种自适应阵列天线与干扰抵消技术相结合的DS CDMA接收机,通过改进的并行干扰抵消技术,对阵列天线合成后"峰指"信号中的多址干扰信号作进一步的消除或抑制.通过理论分析和仿真,验证这种接收机在Rayleigh衰落信道下,较单独使用阵列天线接收或并行干扰抵消技术,具有更好的接收性能.A wide-band CDMA receiver combined with adaptive antenna arrays and partial parallel interference cancellation (PPIC) is proposed. An novel pilot aided spatial-temporal receiver architecture for wide-band CDMA reverse links is proposed in the first stage to separate the signals in space.An improved parallel interference cancellation is employed for further reduction of residual multiple access interference (MAI) especially for in-beam MAI. Simulation results show that the performance of the receiver proposed is superior to the traditional adaptive antenna arrays or PPIC used alone in time variant Rayleigh fading channels.

关 键 词：干扰抵消技术 CDMA接收机 RAYLEIGH衰落信道 自适应阵列天线 宽带 干扰信号 天线接收 接收性能 并行 多址 

分 类 号：TN925[电子电信—通信与信息系统] TN914.53[电子电信—信息与通信工程]