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Performance comparison of transmit diversity and beamforming for the downlink of DS-CDMA system
- Source :
- IEEE Transactions on Wireless Communications. 2:320-334
- Publication Year :
- 2003
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2003.
-
Abstract
- A theoretical analysis has been made to compare the capacity performances of transmit diversity and beamforming in the downlink of direct-sequence code-division multiple-access (DS-CDMA) system. The performances of selection transmit diversity (STD), beamforming (BF), and beam selection transmit diversity (BSTD), which is a hybrid scheme of STD and BF, have been studied at system level with capacity as the performance index. Both fading and interference are jointly considered in multipath propagation environment. It was found that the comparison result strongly relates to the availability of path diversity. The system capacity is maximized by the BF in the presence of path diversity, otherwise it is the BSTD that achieves the best overall capacity performance.
- Subjects :
- Beamforming
Code division multiple access
business.industry
Computer science
Applied Mathematics
Computer Science Applications
Spread spectrum
Diversity combining
Transmit diversity
Channel capacity
Diversity gain
Telecommunications link
Electronic engineering
Fading
Electrical and Electronic Engineering
Telecommunications
business
Multipath propagation
Subjects
Details
- ISSN :
- 15361276
- Volume :
- 2
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Wireless Communications
- Accession number :
- edsair.doi...........5f41e338003152983b2dc450fb77a2ad