A NEW MODULATION SCHEME FOR IR-UWB COMMUNICATION SYSTEMS  

作　　者：Wang Feng Xu Chengqi Zhang Yan 

机构地区：[1]College of Telecommunications ＆ Information Engineering, Nanjing University of Posts ＆ Telecommunications, Nanjing 210003, China

出　　处：《Journal of Electronics(China)》2009年第4期497-502,共6页电子科学学刊（英文版）

摘　　要：Since the poor performance of orthogonal binary Pulse Position Modulation (PPM) compared with binary Pulse Amplitude Modulation (PAM), this paper presents a new modulation scheme named Pulse Width Modulation (PWM) for Impulse Radio Ultra-WideBand (IR-UWB) communication systems. This modulation scheme uses pulses with equal amplitude and different widths to carry different information. The receiver employs differences between similarity coefficients among these pulses to distinguish different information. Both theoretical analysis and simulation results verify that this novel scheme has a Signal to Noise Ratio (SNR) gain of about 1.75 dB compared with or- thogonal binary PPM, and has an SNR loss of about 1.4 dB compared with binary PAM. Although both the theoretical analysis and simulations are based on time-hopping multiple access, this modulation scheme can also be applied to other accessing techniques of UWB communication systems.Since the poor performance of orthogonal binary Pulse Position Modulation （PPM） compared with binary Pulse Amplitude Modulation （PAM）, this paper presents a new modulation scheme named Pulse Width Modulation （PWM） for Impulse Radio Ultra-WideBand （IR-UWB） communication systems. This modulation scheme uses pulses with equal amplitude and different widths to carry different information. The receiver employs differences between similarity coefficients among these pulses to distinguish different information. Both theoretical analysis and simulation results verify that this novel scheme has a Signal to Noise Ratio （SNR） gain of about 1.75 dB compared with or- thogonal binary PPM, and has an SNR loss of about 1.4 dB compared with binary PAM. Although both the theoretical analysis and simulations are based on time-hopping multiple access, this modulation scheme can also be applied to other accessing techniques of UWB communication systems.

关 键 词：Ultra-WideBand （UWB） Pulse Width Modulation （PWM） Pulse Position Modulation （PPM） Pulse Amplitude Modulation （PAM） Bit Error Rate （BER） 

分 类 号：TN92[电子电信—通信与信息系统] TN927.2[电子电信—信息与通信工程]