Title :
Performance analysis of CDMA transmit diversity methods
Author :
Jalloul, Louay M A ; Rohani, Kamyar ; Kuchi, Kiran ; Chen, Jiangnan
Author_Institution :
Adv. Radio Technol., Motorola Inc., Arlington Heights, IL, USA
Abstract :
The link performance of transmit diversity (TD) schemes for third generation CDMA systems is analyzed. Orthogonal transmit diversity (OTD) and space-time transmit diversity (STTD) are compared. It is shown that the link performances of OTD and STTD are nearly the same. However, STTD requires additional receiver processing, and STTD is not directly extendable to more than 2 antennas, because rate one space-time block codes do not exist for greater than 2 antennas. Also, an interleaving approach is shown that works for various TD schemes as well as non-TD
Keywords :
block codes; code division multiple access; diversity reception; interleaved codes; land mobile radio; multiuser channels; radio links; radio transmitters; transmitting antennas; CDMA transmit diversity methods; interleaving approach; link performance; mobile receiver; orthogonal transmit diversity; performance analysis; rate one space-time block codes; receiver processing; space-time transmit diversity; third generation CDMA systems; transmitting antennas; Base stations; Block codes; Diversity methods; Interleaved codes; Multiaccess communication; Performance analysis; Quadrature phase shift keying; RAKE receivers; Receiving antennas; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.801478
