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Power, Rate and Hopping Adaptations in Hybrid DS/FH CDMA Communications over Slow Rayleigh Fading Channels
Ye Hoon LEE Dong Ho KIM Jaekwon KIM Cheolwoo YOU
Publication
IEICE TRANSACTIONS on Communications
Vol.E89-B
No.6
pp.1799-1806 Publication Date: 2006/06/01 Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.6.1799 Print ISSN: 0916-8516 Type of Manuscript: PAPER Category: Wireless Communication Technologies Keyword: hybrid DS/FH, adaptive systems, Rayleigh fading,
Full Text: PDF(361.2KB)>>
Summary:
We consider a hybrid direct-sequence frequency-hopped (DS/FH) code division multiple access (CDMA) communication system, where the transmission power, data rate (i.e. spreading gain), and hopping frequency are adapted relative to the channel variations. Instead of random frequency hopping, hopping pattern is adaptively adjusted to obtain the maximum channel gain among available frequency slots. Transmission power and/or data rate are also adapted such that a target transmission quality is maintained. It is shown that the proposed scheme provides a higher average data rate than pure DS/CDMA with power and rate adaptations, subject to the identical bandwidth and average transmission power constraints.
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