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Transmit Power Allocation for BER Performance Improvement in Multicarrier Systems
Cited 54 time in
Web of Science
Cited 79 time in Scopus
- Authors
- Issue Date
- 2004-10
- Citation
- IEEE Trans. Commun., vol. 52, pp.1658-1663, Oct. 2004
- Keywords
- Bit-error rate (BER) ; diversity ; multicarrier ; transmit power allocation
- Description
- This paper was presented
in part at the IEEE International Symposium on Personal, Indoor, and Mobile
Radio Communications, Lisbon, Portugal, September 2002.
- Abstract
- In a multicarrier system, transmit power allocation
over different subchannels is an effective means of improving the
performance. We develop the optimal transmit power allocation
scheme to improve bit-error rate (BER) performance in a multicarrier
system with diversity reception. A simple suboptimal
scheme is also derived from the optimal one, and an asymptotic
case referred to as the equal-signal-to-noise ratio scheme
is discussed. Numerical results show that the optimal and suboptimal
power allocation schemes significantly outperform the
equal power allocation scheme. The effects of the modulation
level, the number of receiving antennas, and the number of
subchannels on the BER performance are also investigated.
- ISSN
- 0090-6778
- Language
- English
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