Title :
A comparison of narrowband CDMA performance in different multipath environments
Author :
Mottola, John E. ; Bianchi, Charles H.
Author_Institution :
Lockheed Martin Co., Sanders Associates Inc., Nashua, NH, USA
Abstract :
The impact of various multipath channel profiles on the performance of a 1.23-MHz direct sequence spread spectrum (DS/SS) CDMA system is evaluated using simulation models for channel propagation, diversity antenna combining, and RAKE receiver acquisition. The channel profile delay spreads represent different coverage densities (rural, suburban, urban) and network architectures (macro-, micro-, picocell). Results illustrate that cells having greater non-resolvable multipath and less resolvable multipath suffer performance loss. Performance, however, is improved by using diversity antennas, provided there is sufficient spatial signal decorrelation
Keywords :
UHF radio propagation; cellular radio; code division multiple access; diversity reception; multipath channels; pseudonoise codes; radio receivers; spread spectrum communication; DS/SS CDMA system; RAKE receiver acquisition; UHF; architectures; channel profile delay; channel propagation; coverage densities; direct sequence spread spectrum CDMA system; diversity antenna combining; macrocells; microcells; multipath channel profiles; multipath environments; narrowband CDMA performance; picocells; rural region; simulation; spatial signal decorrelation; suburban region; urban region; Antennas and propagation; Diversity reception; Fading; Multiaccess communication; Multipath channels; Narrowband; Receiving antennas; Signal resolution; Spatial resolution; Spread spectrum communication;
Conference_Titel :
Universal Personal Communications, 1998. ICUPC '98. IEEE 1998 International Conference on
Conference_Location :
Florence
Print_ISBN :
0-7803-5106-1
DOI :
10.1109/ICUPC.1998.733639
