【摘要】 讨论了一种用截止速率来表达TH-UWB信道的实际容量的新方法。这种方法不需要综合数据,可以直接用截止速率来直观地表达TH-PPM-UWB系统多用户容量。仿真结果表示,通过在理想功率控制下引入的扩展因子,可以直观地观察到不同的扩展因子直接影响着系统截止速率与用户数和信噪比之间的关系。并且将截止速率算法与传统的Monte Carlo仿真进行了对比,证明截止速率的计算是一个近似表达信道容量的简单有效的方法。更多还原

【Abstract】 The cut-off rate can be used to express the practical capacity of channel in the TH-UWB systems.This method need not numerical integration,the multi-user’s capacity of TH-PPM-UWB systems can use the cut-off rate to express directly.Simulation results show intuitively,by defining a spreading factor under well-controlled power,the relationship between the cut-off rate with the number of user and SNR is affected by the spreading factor directly.Also compares this method with the Monte Carlo simulation,and consequently proves that the calculate of cut-off rate is a simple and effective method to express approximately the channel capacity.更多还原