WCDMA移动通信系统抗时隙屏蔽式干扰研究

摘要

The normalized throughput and the probability of user successful transmission is analyzed under the condition of slot-masked jamming in the mobile communication system of WCDMA. Two improved methods to enhance the anti-jamming performance of system are proposed. There is less jamming to system and users when the interval of pair wise-adjacent is longer than the interval between the transmission of preamble and the message, or when the interval is shortened between the transmission of preamble and the message. At last, numerical results and simulations show the effectiveness of the analysis. The results show that sub-channel technique has favorable anti-jamming performance against the slot-masked jamming.%针对时隙屏蔽式干扰对WCDMA移动通信系统的干扰问题，理论分析了不同条件下干扰对用户平均接入概率和系统归一化吞吐量的影响，提出了两种方法以改善系统抗干扰性，即选择子信道使得两相邻接入时隙间距大于前导码和消息部分发送间距，干扰对系统和用户不产生影响；缩短前导码和消息部分发送间距可以提高系统的抗干扰能力。实验仿真验证了分析的准确性和系统抗干扰的有效性。