基于多特征码S-ALOHA的资源占用式干扰技术分析

Research of Resource-Occupied Jam to Multi Signature Slotted ALOHA Random Access Procedure

针对多特征码S-ALOHA随机接入过程干扰问题，利用其随机接入过程透明化特点，提出了资源占用式干扰方法。以WCDMA移动通信系统为典例，理论分析了该干扰方法对系统的归一化吞吐量和用户成功接入概率的影响，数值计算和实验仿真有效验证了该干扰方法对WCDMA移动通信系统具有较大干扰影响，能够实现以较小功率使得整个小区的用户不能成功进行接入。

A novel jamming approaches, which is named after resource-occupied jamming, based on the crystal trait of Random Access Procedure are presented in order to investigate the jamming performance of multi signature slotted ALOHA random access procedure. Taking the mobile communication？system of WCDMA for instance, this paper analyzes the normalized throughput and the probability of user successful transmission under the condition of the jamming. At the last, we use numerical results and simulations to demonstrate the influence of this novel jamming approaches. The results show that the proposed approach has had a significant impact on the successful access of all UE in a Cell.