Title :
MMSE reception of DS-CDMA with open-loop transmit diversity
Author_Institution :
Motorola, USA
fDate :
6/23/1905 12:00:00 AM
Abstract :
Several transmit diversity methods have been introduced into the base-to-mobile (forward) link of third generation (3G) standards in response to a need for increased capacity. Orthogonal transmit diversity (OTD) and space-time spreading (STS) have been included in the 3GPP2 standard, while space-time transmit diversity (STTD) is part of the 3GPP standard. In this paper, the minimum mean-squared error (MMSE) receiver is developed for all three of these transmit diversity methods. Signal-to-noise ratio expressions are developed for both the MMSE receiver and the matched-filter (RAKE) receiver, and these expressions are used to compare the relative performance of the methods
Keywords :
code division multiple access; diversity reception; filtering theory; land mobile radio; least mean squares methods; matched filters; radio links; radio receivers; spread spectrum communication; telecommunication standards; 3G standards; 3GPP standard; 3GPP2 standard; DS-CDMA; MMSE receiver; MMSE reception; RAKE receiver; SNR; base-to-mobile link; capacity; forward link; matched-filter receiver; minimum mean-squared error; open-loop transmit diversity; orthogonal transmit diversity; performance; signal-to-noise ratio; space-time spreading; space-time transmit diversity; third generation standards;
Conference_Titel :
3G Mobile Communication Technologies, 2001. Second International Conference on (Conf. Publ. No. 477)
Print_ISBN :
0-85296-731-4
DOI :
10.1049/cp:20010032
