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 。
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.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2003年第2期169-172,共4页
Journal of Beijing University of Aeronautics and Astronautics
基金
国家自然科学基金资助项目 (60 2 710 12 )
关键词
空分多址
共信道干扰
自适应阵
全球移动通信系统
space division multiple access
common channel interferences
adaptive arrays
global system for mobile
