DocumentCode :
1205821
Title :
Fading depth dependence on system bandwidth in mobile communications - an analytical approximation
Author :
Cardoso, Filipe D. ; Correia, Luis M.
Author_Institution :
Dept. of Electr. Eng., EST/Polytech. Inst. of Setubal, Portugal
Volume :
52
Issue :
3
fYear :
2003
fDate :
5/1/2003 12:00:00 AM
Firstpage :
587
Lastpage :
594
Abstract :
A simple and computationally inexpensive analytical approach is proposed for the evaluation of the dependence of short-term fading depth on system bandwidth and environmental characteristics. The approach, accounting for the maximum difference in propagation path length and having the Rice factor as a parameter, is derived by fitting simulated data from a model in the literature. Application examples are presented for GSM, UMTS, HIPERLAN, and mobile broadband systems (MBS), giving some insight into the fading depth observed under different conditions with regard to system bandwidth and environmental characteristics. Macro-, micro-, and picocell environments are considered. In the microcellular environment, the fading depth experienced by UMTS is below the one for GSM by 0.1 to 5.5 dB, while in the picocellular one, the difference between GSM and UMTS is not significant, being almost independent of environment characteristics. When considering HIPERLAN or systems with larger bandwidths, the fading depth, both in micro and picocellular environments, is smaller than the one verified by UMTS; however, there is an increased dependence on environmental characteristics. In the macrocellular environment, the fading depth experienced by UMTS is about 6 to 11 dB below the one for GSM. Hence, different short-term fading margins should be considered for each system and working environment.
Keywords :
3G mobile communication; broadband networks; cellular radio; fading channels; microcellular radio; multipath channels; picocellular radio; wireless LAN; GSM; HIPERLAN; Rice factor; UMTS; analytical approximation; fading depth dependence; macrocellular radio; microcellular radio; mobile broadband systems; mobile communications; multipath fading; picocellular radio; propagation path length; short-term fading margins; system bandwidth; 3G mobile communication; Bandwidth; Computational modeling; Fading; Frequency; GSM; Local area networks; Mobile communication; Telecommunications; Wideband;
fLanguage :
English
Journal_Title :
Vehicular Technology, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9545
Type :
jour
DOI :
10.1109/TVT.2003.810973
Filename :
1200248
Link To Document :
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