DocumentCode
853680
Title
Spectral Efficiency of Equal-Rate DS-CDMA Systems with Multiple Transmit Antennas
Author
Li, Husheng ; Poor, H. Vincent
Author_Institution
QUALCOMM Inc., San Diego, CA
Volume
5
Issue
12
fYear
2006
fDate
12/1/2006 12:00:00 AM
Firstpage
3680
Lastpage
3688
Abstract
The spectral efficiency of equal-rate DS-CDMA systems with multiple transmit antennas is analyzed. Explicit expressions for the spectral efficiency are obtained in the low and high energy regions and numerical results are presented for the moderate energy region. The performance gains resulting from the use of multiple transmit antennas are discussed. An equation characterizing the diversity-multiplexing tradeoff in this situation is derived. A conclusion that adding more transmit antennas does not necessarily improve the performance with the constraint of equal rate is drawn
Keywords
Direct-sequence code-division multiple access; Equations; Helium; MIMO; Multiaccess communication; Performance gain; Receiving antennas; System performance; Transmitting antennas; Wireless communication;
fLanguage
English
Journal_Title
Wireless Communications, IEEE Transactions on
Publisher
ieee
ISSN
1536-1276
Type
jour
DOI
10.1109/TWC.2006.256991
Filename
4027603
Link To Document