Title :
Space-time block codes in multipath CDMA systems
Author :
Geng, Jifeng ; Mitra, Urbashi ; Fitz, Michael P.
Author_Institution :
Dept. of Electr. Eng. Syst., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
A general model for space-time block coding in multipath channels is developed where narrowband systems can be viewed as special cases of wideband systems. For both the uplink and downlink, the classical space-time code design criteria (diversity gain and coding gain) are investigated. Conditions for achieving full diversity are established. Some optimal minimum metric codes for quasi-static channels exhibit significant gains over comparable known orthogonal or unitary group codes
Keywords :
block codes; channel coding; code division multiple access; diversity reception; fading channels; multipath channels; CDMA systems; coding gain; diversity gain; downlink; multipath channels; narrowband systems; optimal minimum metric codes; quasi-static channels; space-time block codes; uplink; wideband systems; Block codes; Delay; Diversity methods; Downlink; Electronic mail; Fading; Multiaccess communication; Narrowband; Space time codes; Transmitting antennas;
Conference_Titel :
Information Theory, 2001. Proceedings. 2001 IEEE International Symposium on
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-7123-2
DOI :
10.1109/ISIT.2001.936014
