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Conference Paper
Space-time codes over PN sequences for DS/CDMA systems
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- Authors
- Dong Woon Bai, Woo Yong Lee, S.W. Kim
- Issue Date
- 2004-03
- Citation
- Wireless Communications and Networking Conference (WCNC) 2004, pp.1578-1582
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- This paper considers the application of space-time coding techniques in DS/CDMA communication systems with multiple transmit antennas. Space-time codes are constructed over the set of possible pseudo noise (PN) sequences rather than standard 2-D signals. Several design examples of these codes with different sequences and slates are presented and possible methods of implementation are suggested. Simulation results indicate that the proposed space-time coded systems provide a significant performance improvement over the reference transmit diversity system. The performance improvement is more pronounced when two receive antennas are employed and grows as the data alphabet M grows.
- KSP Keywords
- CDMA communication, CDMA systems, Coding techniques, Communication system, Diversity system, PN sequence, Pseudo Noise, Space time(ST), Space-time coded systems, TRANSMIT DIVERSITY, performance improvement