Title :
Performance of equi-correlated M-ary UWB-FSK considering antenna and multipath effects
Author :
Ramirez-Mireles, Fernando
Author_Institution :
ITAM, Mexico City, Mexico
Abstract :
We study ultra wideband (UWB) communications over dense multipath channels using M-ary frequency shift keying (FSK) data modulation with both coherent and non-coherent detection. We present an M-ary FSK signal design to balance energy and correlation variations due to the frequency selectivity of the multipath channels and the frequency response of the antenna system. We evaluate the bit error rate (BER) taking into account the frequency domain effects of the antenna and the channel. We calculate the signal-to-noise ratio (SNR) improvement for different values of M and channel conditions. Using the binary coherent receiver as a baseline, we provide numerical results showing that a coding gain larger than 6 dB is possible for large M using a coherent receiver with just two correlators.
Keywords :
error statistics; frequency response; frequency shift keying; frequency-domain analysis; multipath channels; signal detection; ultra wideband antennas; ultra wideband communication; BER; M-ary frequency shift keying data modulation; SNR; UWB communications; antenna system; binary coherent receiver; bit error rate; coherent detection; dense multipath channels; equicorrelated M-ary UWB-FSK signal design; frequency domain effects; frequency response; frequency selectivity; multipath effects; noncoherent detection; signal-to-noise ratio; ultrawideband communications; Ultra wideband communications; frequency shift keying; multipath channels; spread spectrum;
Conference_Titel :
Communications (LATINCOM), 2012 IEEE Latin-America Conference on
Conference_Location :
Cuenca
Print_ISBN :
978-1-4673-5079-2
DOI :
10.1109/LATINCOM.2012.6505992
