【摘要】 考虑到时分多址系统的特殊性质 ,并结合已有的时分多址系统中共信道干扰抑制技术 ,提出了一种应用于GSM(GlobalSystemforMobile)系统的 ,不依赖于用户空间特征估计的空分多址方案 .方案采用自适应天线和软波束形成技术 ,能够在时分多址基础上实现多路信号的空分接收 .文章给出了在GSM系统中应用该技术的仿真实例 ,仿真结果表明 ,该方法能够有效的形成正交接收 ,发送波束 ,从而保证共用相同信道的多个用户间的互不干扰更多还原

【Abstract】 Considering the special characters of GSM (Globle System for Mobile) and the method presented by other researchers which uses antenna arrays to eliminate the cochannel interferences in wireless communication, a SDMA (Space Division Multiple Access) architecture used in GSM was put forward. Adaptive array and soft beamforming were used in this method to realize SDMA in TDMA (Time Division Multiple Access) system and no estimation of DOA (Direction of Arrival) or spatial signature was required in advance. This method can produce orthogonal beams in relative mild situation, therefore the same channel can be used by different users simultaneously. The applicability of this method was verified through simulation.更多还原