Title :
Simplified bit error rate analysis of PAPM-UWB with MRC and EGC in lognormal fading channel
Author :
Rajwani, Faruq ; Beaulieu, Norman C.
Author_Institution :
iCORE Wireless Commun. Lab., Alberta Univ., Edmonton, Alta., Canada
Abstract :
Ultra-wideband (UWB) communications is a new technology being developed for high-speed, short distance wireless communications. One possible modulation scheme is pulse amplitude and position modulation (PAPM), which has a flat power spectral density that is highly suited to UWB. Closed-form expressions for the error rate performance of a PAPM UWB receiver based on maximal ratio combining (MRC) in a lognormal fading channel have been derived using Wilkinson´s approximation for lognormal sums. The receiver is analyzed using a more accurate approximation to the lognormal sum distribution. Our approach is extended to obtain accurate closed-form expressions for the performance of equal gain combining (EGC). The performances of MRC and EGC diversity are calculated and compared to the results obtained using Wilkinson´s approximation.
Keywords :
approximation theory; diversity reception; error statistics; fading channels; log normal distribution; pulse amplitude modulation; pulse position modulation; ultra wideband communication; BER; MRC; UWB communications; Wilkinson approximation; closed-form expressions; diversity combining; equal gain combining; lognormal fading channel; lognormal sum distribution; maximal ratio combining; power spectral density; pulse amplitude and position modulation; pulse amplitude modulation; pulse position modulation; simplified bit error rate analysis; ultra-wideband communications; Amplitude modulation; Bit error rate; Closed-form solution; Diversity reception; Error analysis; Fading; Performance gain; Pulse modulation; Ultra wideband technology; Wireless communication;
Conference_Titel :
Communications, 2005. ICC 2005. 2005 IEEE International Conference on
Print_ISBN :
0-7803-8938-7
DOI :
10.1109/ICC.2005.1494904
