Title :
M-ary pulse shape modulation for PSWF-based UWB systems in multipath fading environment
Author :
Usuda, Kazuto ; Zhang, Honggang ; Nakagawa, Masao
Author_Institution :
Dept. of Inf. & Comput. Sci., Keio Univ., Yokohama, Japan
fDate :
29 Nov.-3 Dec. 2004
Abstract :
M-ary pulse shape modulation (PSM) has been proposed for achieving a high data rate even in severe multipath fading environments, based on the orthogonality of pulse waveforms of prolate spheroidal wave functions (PSWF). With respect to the PSWF-based M-ary PSM proposal, adaptive guard-time and selective-Rake receivers with different combining fingers are also considered The BER performance of the M-ary PSM, the guard-time and the Rake combination are investigated according to Monte-Carlo simulations by using the modified IEEE 802.15.3a S-V UWB multipath channel model. The proposed guard-time scheme has been verified to be effective in overcoming the inter-pulse-interferences. Moreover, it has been found that the PSWF-based pulse waveforms behave better than the conventional Gaussian mono-pulse under multipath fading conditions.
Keywords :
Monte Carlo methods; error statistics; fading channels; multipath channels; pulse modulation; radio receivers; ultra wideband communication; BER; IEEE 802.15.3a S-V UWB channel model; M-ary pulse shape modulation; Monte-Carlo simulations; PSM; PSWF-based UWB systems; UWB impulse radio; adaptive guard-time; inter-pulse-interference; multipath fading environment; prolate spheroidal wave functions; selective-Rake receiver combining fingers; Bit error rate; Fading; Fingers; Multipath channels; Proposals; Pulse modulation; Pulse shaping methods; RAKE receivers; Shape; Wave functions;
Conference_Titel :
Global Telecommunications Conference, 2004. GLOBECOM '04. IEEE
Print_ISBN :
0-7803-8794-5
DOI :
10.1109/GLOCOM.2004.1379017
