摘要
本论文提出了一个多载波DS-CDMA的下行空时接收机结构并且分析了它的性能,对于每一个载波,首先进行最优波束形成。再经过传统的RAKE合并,并比较了多天线接收机和单天线的接收机的性能。仿真结果表明,使用天线阵列,多径干扰和多用户干扰可以被有效的抑制,因而其系统容量远远高于单天线系统。
A space-time receiver structure is presented for the multicarrier direct sequence code division access (MC-DS-CDMA) system at the base station and its performance is analyzed. Over each carrier, a beam former is designed followed by a conventional RAKE receiver. For performance evaluation, such a receiver is compared to the case that only one single antenna is employed. Simulation results show that multipath interference and multi-user interference can be effectively suppressed in the MC-DS-CDMA system employing an antenna array thus system capacity can be increased greatly.
出处
《电路与系统学报》
CSCD
2003年第5期19-22,共4页
Journal of Circuits and Systems
