Performance of the bi-orthogonal modulation for ultra-wideband communication systems with multiple access interference
暂无分享,去创建一个
This paper investigates the use of bi-orthogonal modulations in multiuser communication systems based on ultra wide band impulse radio (UWB-IR) technology: the communication systems considered herein use Gaussian waveforms in AWGN channel and rely on the utilization of a time-hopping spreading technique. A hybrid pulse modulation is defined, which is obtained by combining pulse amplitude modulation (PAM) and pulse position modulation (PPM) techniques. Particularly, we have compared the bi-orthogonal system performance to the classical orthogonal one, also in the condition of lack of a general synchronism, possibly caused by the presence of interfering users that belong to a separate network. Moreover, we have taken into account the use of an M-ary alphabet, in the case of orthogonal and bi-orthogonal modulation schemes.
[1] G. R. Aiello,et al. Ultra-wideband wireless systems , 2003 .
[2] Fernando Ramírez-Mireles. On the performance of ultra-wide-band signals in Gaussian noise and dense multipath , 2001, IEEE Trans. Veh. Technol..
[3] Moe Z. Win,et al. Ultra-wide bandwidth time-hopping spread-spectrum impulse radio for wireless multiple-access communications , 2000, IEEE Trans. Commun..
[4] Qinghua Li,et al. Multiuser detection for DS-CDMA UWB in the home environment , 2002, IEEE J. Sel. Areas Commun..