Title :
Performance of coherent and noncoherent receivers for UWB communications
Author :
Durisi, G. ; Benedetto, S.
Author_Institution :
Ist. Superiore Mario Boella, Torino, Italy
Abstract :
In this paper we present a comparison between coherent and noncoherent UWB receivers, under a realistic propagation environment, that takes into account also the effect of path-dependent pulse distortion. As far as coherent receivers are concerned, both maximal ratio combining (MRC) and equal gain combining (EGC) techniques are analyzed, considering a limited number of estimated paths. Furthermore, two noncoherent schemes are presented: a simple differential detector and its adaptive version. While the first receiver shows a significative performance loss, if compared to coherent detectors, the second one is able to guarantee probability of error similar to the one obtained employing a Rake receiver, equipped with up to 20 fingers, without requiring channel estimation.
Keywords :
ad hoc networks; broadband networks; channel estimation; differential detection; distortion; error statistics; indoor radio; personal communication networks; radio receivers; radiowave propagation; Rake receiver; UWB communication; adaptive coherent detection; channel estimation; coherent receiver; differential detector; equal gain combining technique; error probability; maximal ratio combining; noncoherent receiver; propagation environment; pulse distortion; Bandwidth; Channel estimation; Detectors; Diversity reception; Energy capture; Fading; Multipath channels; Performance loss; RAKE receivers; Ultra wideband communication;
Conference_Titel :
Communications, 2004 IEEE International Conference on
Print_ISBN :
0-7803-8533-0
DOI :
10.1109/ICC.2004.1313181
