TD-SCDMA随机接入过程中碰撞检测的性能分析

Performance Analysis of Collision Detection in Random Access Procedure for TD-SCDMA

随机接入过程是无线通信系统中的一个关键性过程 ,这个过程中产生的碰撞问题会直接影响用户接入的成功和无线资源的利用。针对 TD- SCDMA系统的特点 ,对随机接入上行同步序列的碰撞问题进行了研究 ,分析了基站端的碰撞检测过程 ,对检测中可能出现的 2种情况进行了仿真 。

Random access procedure is one of the key procedures for wireless communication system. The collision that arises in this procedure will directly affect the success of user access as well as the utilization of the radio resource. On account of the unique characteristics of the TD SCDMA system, the collision problem of the uplink synchronous sequences is considered and the collision detection procedure is analyzed in this paper. The collision detection on two possibilities is simulated and the performance of collision detection is evaluated and some fruitful results are also described in this paper.