Title :
Average Orthogonality Factor in WCDMA Downlinks for Independent Rayleigh Fading Multipath Channels
Author :
Li, Yan ; Kishore, Shalinee
Author_Institution :
Dept. of Electr. & Comput. Eng., Lehigh Univ., Bethlehem, PA
fDate :
4/1/2007 12:00:00 AM
Abstract :
In wideband code division multiple access (WCDMA) system capacity analysis and simulations, downlink interference due to loss of orthogonality between spreading codes is modeled by means of the orthogonality factor (OF). This study derives closed-form expressions for the time-averaged OF over independent Rayleigh fading multipath channels, in which the average power gains of each path can be distinct or identical. Two approximation approaches proposed in related literature are tested against the analytical results presented here
Keywords :
Rayleigh channels; broadband networks; code division multiple access; multipath channels; radio links; WCDMA downlinks; average orthogonality factor; independent Rayleigh fading channels; multipath channels; spreading codes; wideband code division multiple access; Analytical models; Closed-form solution; Downlink; Interference; Multiaccess communication; Multipath channels; Power system modeling; Rayleigh channels; Testing; Wideband;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2007.348315
