Title :
Cyclic delay diversity based space-time/space-frequency coded MC-CDMA system
Author :
Lodhi, Afzal ; Said, Fatin ; Aghvami, A. Hamid
Author_Institution :
King´´s Coll., London
Abstract :
Spatial diversity techniques will inarguably play an important role in the realization of B3G wireless systems, which promise higher data transmission rates and affluent multi-media contents. In this article, we present a CDD based "space time/space-frequency (ST/SF) block coded" diversity transmitter for MC-CDMA system. Equipped with CDD a fraction of the total number of transmit antennas is used to extract the frequency (multipath) diversity while the remaining antennas employing ST/SF-block codes provide maximum spatial diversity. This hybrid architecture makes full use of the frequency domain spreading of MC-CDMA system and provides excellent spatial and frequency diversity which is otherwise impossible to realize with standalone CDD or block codes
Keywords :
3G mobile communication; block codes; code division multiple access; cyclic codes; diversity reception; space-time codes; transmitting antennas; B3G wireless systems; CDD; MC-CDMA system; block codes; cyclic delay diversity; diversity transmitter; space-time-space-frequency code; transmitting antennas; Block codes; Data communication; Data mining; Delay; Frequency diversity; Frequency domain analysis; Multicarrier code division multiple access; Multimedia systems; Transmitters; Transmitting antennas;
Journal_Title :
Vehicular Technology Magazine, IEEE
DOI :
10.1109/MVT.2006.307295
