【摘要】 提出了一种应用多输入多输出(MIMO)的垂直分层空时(V-BIAST)检测算法的多载波直接序列扩频CDMA(MC-DC-CDMA)的系统结构,对系统上行链路的误码率性能进行了理论分析,推导出了接收天线数大于发射天线数条件下系统误码率的理论表达式,并通过计算机仿真进行了验证．数值结果表明,收发天线数对系统性能具有较大的影响,相对于传统MC-DS-CDMA系统,减少发射天线数或增加接收天线数均可使基于V-BLAST算法的MC-DS-CDMA系统的性能和容量有不同程度的改善．更多还原

【Abstract】 In this paper,a new MIMO MC-DS-CDMA system structure applying V-BLAST algorithm is proposed and analyzed.The bit error rate expression of the proposed uplink system is derived on condition that the number of receiving antennas is greater than that of transmitting antennas,and the BER expression is verified by computer simulations.Numerical results show that the MIMO MC-DS- CDMA system based on V-BLAST algorithm can improve the system performance and capacity.更多还原