Title :
Space-time coded wideband CDMA systems
Author :
Wang, Jibing ; Yao, Kung
Author_Institution :
Dept. of Electr. Eng., California Univ., Los Angeles, CA, USA
fDate :
6/24/1905 12:00:00 AM
Abstract :
In this paper, we consider utilizing the space-time codes in the wideband CDMA system. We assume that there are multiple resolvable paths in the frequency selective fading channel. Analytical results show that in addition to spatial diversity, another diversity gain called multipath diversity is achievable. Performance criterion for full space multipath diversity gain is analyzed. We consider both the case that the receiver has the ideal channel state information and the case that there are errors in the channel state information available to the receiver. A RAKE receiver is used in the CDMA system to gain the multipath diversity. We derive the generalized RAKE receiver structure for the space-time block coding (STBC) coded wideband CDMA systems. The simulation results demonstrate the additional gain guaranteed by the multipath diversity.
Keywords :
block codes; broadband networks; code division multiple access; diversity reception; fading channels; multipath channels; radio receivers; RAKE receiver; STBC; channel state information; diversity gain; frequency selective fading channel; multipath diversity; space-time block coding; space-time coded wideband CDMA-systems; Channel state information; Diversity methods; Fading; Frequency; Multiaccess communication; Multipath channels; RAKE receivers; Space time codes; Spatial resolution; Wideband;
Conference_Titel :
Vehicular Technology Conference, 2002. VTC Spring 2002. IEEE 55th
Print_ISBN :
0-7803-7484-3
DOI :
10.1109/VTC.2002.1002706
