脉冲选择MIR UWB通信系统的多用户性能

摘要

针对脉冲选择MIR UWB通信系统可以灵活选择发射子带脉冲的特征,提出一种采用跳时方式的多用户系统模型.通过构建该系统模型,仿真研究系统误码率性能,在用户数目为2/3/4/8时,L=15、r=2、K=8 bits情况下,与常规MIR UWB系统进行比较,对比分析两系统在数据传输速率相同,以及同步和异步通信时的用户性能.结果表明:在大信噪比条件下,基于脉冲选择的MIR UWB通信系统的多用户模型,其误码率性能优于常规MIR UWB通信系统,可实现系统传输速率的灵活调整.%According to the characteristics of pulse select MIR UWB communication system can flexibly select the transmit subband pulse, a multi-user system model based on time hopping was proposed.The system model was given and the BER performance was simulated.When the number of users is 2/3/4/8, L=15, r=2, K=8 bits, compared with the conventional MIR UWB system,the data transmission rates of the two systems are the same, and the simulation is divided into synchronous and asynchronous.The results show that in the case of high SNR, multi-user model of MIR UWB communication system based on pulse selection, and its BER performance is better than the conventional one, and it can realize the flexible adjustment of the system transmission rate.