Paper Info
Title
Spectral efficiency for a hybrid DS/FH code-division multiple-access system in cellular mobile radio
Abstract
The spectral efficiency of a hybrid cellular direct-sequence/frequency hopping code-division muItiple-access (DS/FH-CDMA) system operating in a Rayleigh-fading environment is examined. In this work, spectral efficiency is evaluated in terms of the theoretically achievable channel capacity (in the Shannon sense) per user, on the condition that this is estimated in an average sense. The analysis covers the downlink assuming a static model of operation and a direct-sequence/slow-frequency hopping (DS/SFH) as well as a direct-sequence/fast-frequency hopping (DS/FFH) scheme. As it is shown, the spectral efficiency of cellular DS/FFH-CDMA operating in a Rayleigh-fading environment is greater than that of broad-band DS- and DS/SFH-CDMA systems operating under normalized conditions. This is justified by the combination of path-diversity reception as achieved by conventional coherent RAKE receivers and the frequency diversity that is inherently present in FFH transmission
Year
DOI
Venue
2001
10.1109/25.966565
Vehicular Technology, IEEE Transactions
Keywords
Field
DocType
Rayleigh channels,cellular radio,channel capacity,code division multiple access,diversity reception,frequency hop communication,radio receivers,radio spectrum management,spread spectrum communication,DS/FFH scheme,DS/FH-CDMA,RAKE receivers,Rayleigh-fading environment,cellular mobile radio,channel capacity,direct-sequence/fast-frequency hopping scheme,downlink,frequency diversity,hybrid DS/FH code-division multiple-access system,hybrid cellular direct-sequence/frequency hopping code-division multiple-access system,path-diversity reception,spectral efficiency
Rake,Diversity scheme,Computer science,Fading,Electronic engineering,Spectral efficiency,Code division multiple access,Time division multiple access,Frequency-hopping spread spectrum,Channel capacity
Journal
Volume
Issue
ISSN
50
6
0018-9545
Citations 
PageRank 
References 
14
1.35
13
Authors
2
Name
Order
Citations
PageRank
P. Varzakas1366.51
George S. Tombras240143.59