DocumentCode :
1852162
Title :
Spatial path separation and path diversity in 3G multimedia mobile communications using Intelligent Pre-Rake Processing in MISO channels
Author :
Khamy, Said E EL ; Hajjaj, Khalid S Ba
Author_Institution :
Dept. of Electr. Eng., Alexandria Univ., Alexandria
fYear :
2008
fDate :
18-20 March 2008
Firstpage :
1
Lastpage :
10
Abstract :
This paper studies the use of intelligent (INT) pre-rake combining in direct sequence spread spectrum code-division multiple-access (DS-SS/CDMA) systems. The study considers multipath Rayleigh fading channels in the downlink in single input single output (SISO) and multiple input single output (MISO) environments. The used modulation technique is binary PSK (BPSK) with time division duplexing (TDD) and maximal ratio combining (MRC). The INT pre-rake processing selects the paths with the highest gains for transmission. Two scenarios are considered. The first approach explores the effect of using multiple antennas at the transmitter (MISO) on the system performance for different number of users and processing gains. The second approach is to study the usage of INT pre-rake and compare it to the conventional pre-rake and the generalized selection (GS) pre-rake in MISO channels.
Keywords :
3G mobile communication; MIMO communication; code division multiple access; multifrequency antennas; multimedia communication; multipath channels; phase shift keying; spread spectrum communication; time division multiplexing; 3G multimedia mobile communications; BPSK; DS-SS-CDMA; MISO channels; binary PSK; direct sequence spread spectrum code-division multiple-access systems; intelligent pre-rake processing; maximal ratio combining; modulation technique; multipath Rayleigh fading channels; multiple antennas; multiple input single output environments; path diversity; single input single output environments; spatial path separation; time division duplexing; transmitter system performance; 3G mobile communication; Binary phase shift keying; Diversity reception; Downlink; Fading; Multiaccess communication; Multimedia communication; Phase shift keying; Spread spectrum communication; Transmitting antennas;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Radio Science Conference, 2008. NRSC 2008. National
Conference_Location :
Tanta
Print_ISBN :
978-977-5031-95-2
Type :
conf
DOI :
10.1109/NRSC.2008.4542360
Filename :
4542360
Link To Document :
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