Multi-user Capacity of M-PPM UWB System Using PSWF Pulses
The information capacity model of M-ary PPM ultra-wideband communications is built over multiple-access and additive white Gaussian noise channel. The model extends the known capacity of PPM orthogonal pulses to incorporate specific UWB constraints. Based on Gaussian approximation for the multiple access interference, an expression of the UWB capacity is developed as a function of system parameter. The channel capacity of UWB communications using PSWF pulses subject to FCC spectral masks is computed, and the results is compared with that of 5th and 7th order Gauss pulse. The simulation results show that the UWB system with the PSWF pulses has more channel capacity than the system with Gaussian pulse. This conclusion presents a new view for the UWB pulse choice, which can facilitate system designers to improve the efficiency of UWB communications.
UWB channel capacity multi-user prolate spheroidal wave function
Zhang Lei Chen Zhaonan WANG Hongxing Zhao Zhiyong Liu Chuanhui
Naval Aeronautical and Astronautical University, Yantai, China, 264001
国际会议
北京
英文
86-89
2010-09-26（万方平台首次上网日期，不代表论文的发表时间）