摘要
时分-同步码分多址(TD-SCDMA)系统采用的扩频码码长最大为16,当邻小区用户处于2小区边缘时会对本小区造成较大的干扰。针对上行链路提出了一种新的干扰消除方法:串行干扰消除-联合检测(SIC-JD)。该方法采用复杂低的SIC对上行链路中的小区间干扰进行消除,对于小区内干扰和残留的小区间干扰采用联合检测进行消除。3GPP case1信道下的仿真结果显示了此方法能够有效消除小区间和小区内干扰,提高接收机性能。
TD- SCDMA system adopts spreading codes with 16 chips. When the users of adjacent cell lie in the edge of cell, the interference is severe. In this paper, a novel scheme was presented, which combines Serial Interference Cancellation （SIC） and Joint Detection （JD） to cancel interference. This scheme cancels inter-cell interference with SIC, and cancels intra-cell interference and residual inter-cell interference of uplink with JD .The simulation results under 3GPP casel channel show that the novel scheme has good efficiency for inter-cell and intra-cell interference cancellation,and enhance the performance of receiver.
出处
《无线电工程》
2006年第10期22-23,26,共3页
Radio Engineering
基金
国家"863"基金资助(2004AA123160)
关键词
码分多址
时分双工
小区间干扰
小区内干扰
Code Division Multi Access （CDMA）
Time Division Duplex（TDD）
inter-cell interference
intra-cell interference
