Paper Info
Title
Performance Improvement by Microdiversity for Wideband Signals in Frequency Selective Fading Indoor Channels with Co-Channel Interference
Abstract
A comprehensive analytical bit-error-rate (BER) model is presented to analyse the performance of antenna-microdiversity for wideband BPSK modulated signals in the frequency selective fading multipath channel, specified by its complex impulse response. The model includes the disturbance by intersymbol interference (ISI) and co-channel interference (CCI), as well as the channels‘ impact on the carrier phase- and clock recovery in the receiver. The channel impulse responses at the antenna elements are determined by taking into account the direction of arrival of the individual paths. Computational BER- and SNIR-gain results (SNIR = signal-to-noise+interference-ratio) show that a substantial performance improvement is achieved with antenna combining for wideband signals which suffer ISI and/or CCI. For the indoor multipath channel with exponentially decaying power delay profile, the performance enhancement is compared for several antenna combining schemes. Quasi-coherent equal gain combining (QCEGC) is proposed as an novel EGC scheme based on a less accurate phase estimation technique. For wideband signals, QCEGC shows a slight performance degradation when compared to maximal ratio combining or minimum mean square error combining (MMSEC), but has a much lower implementation complexity. In the channel with CCI, where the best performance is achieved with MMSEC, QCEGC performs very poor.
Year
DOI
Venue
1999
10.1023/A:1018680824808
Wireless Personal Communications
Keywords
Field
DocType
multipath propagation,antenna diversity,intersymbol interference,co-channel interference,bit-error-rate
Multipath propagation,Wideband,Intersymbol interference,Antenna diversity,Telecommunications,Computer science,Fading,Maximal-ratio combining,Co-channel interference,Electronic engineering,Real-time computing,Power delay profile
Journal
Volume
Issue
ISSN
11
3
1572-834X
Citations 
PageRank 
References 
0
0.34
11
Authors
1
Name
Order
Citations
PageRank
Gerard J. M. Janssen17319.73