Title :
On the performance of MC-CDMA with transmit diversity over fast frequency selective fading channels
Author :
Nallanathan, A. ; Han Meng, Peh
Author_Institution :
Dept. of Electr. & Comput. Eng., Nat. Univ. of Singapore, Singapore
Abstract :
Space-time (ST) block coded multi-carrier code division multiple access (MC-CDMA) has been proposed as an attractive solution for high data rate transmission in a multipath fading environment. A space-time-frequency (STF) block coded MC-CDMA scheme is presented. The proposed scheme is a four-branch transmitter diversity system which utilizes block codes formed over the space, time and frequency domains. The performance of the STF block coded MC-CDMA scheme is then compared with that of the ST block coded MC-CDMA and SF block coded MC-CDMA systems with four transmitting antennas. It is shown that the proposed STF block coded MC-CDMA scheme gives better performance over fast frequency selective fading channels.
Keywords :
block codes; code division multiple access; diversity reception; fading channels; multipath channels; space-time codes; STBC MC-CDMA; data transmission; fast fading channels; fast frequency selective fading channels; four-branch transmitter diversity system; multipath fading; space-frequency block coding; space-time block coded multi-carrier code division multiple access; space-time codes; space-time-frequency block coding; transmit diversity; transmitting antennas; Block codes; Fading; Frequency conversion; Frequency diversity; Frequency domain analysis; Maximum likelihood decoding; Multiaccess communication; Multicarrier code division multiple access; OFDM; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference, 2004. VTC 2004-Spring. 2004 IEEE 59th
Print_ISBN :
0-7803-8255-2
DOI :
10.1109/VETECS.2004.1390475
