Constant-Power Allocation With Average and Peak Power Constraints in Nakagami-m Fading Channels

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This paper considers the performance of time-domain power-allocation schemes with average and peak power constraints and proposes a constant-power allocation (CPA) scheme. In a Nakagami-m fading environment, an exact closed-form expression for the ergodic capacity of the proposed CPA scheme is derived, and the effect of the fading parameter m on the performance degradation due to a peak power constraint is investigated. The proposed scheme shows a near-optimum performance within 5% of the optimal capacity and provides a noticeable performance improvement as it reduces the peak-to-average power ratio (PAPR) with a signal-to-noise ratio (SNR) gain of approximately 8.5 dB while also mitigating the intercell interference in the uplink.
Publisher
IEEE-Inst Electrical Electronics Engineers Inc
Issue Date
2009-06
Language
English
Article Type
Article
Keywords

CAPACITY

Citation

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, v.58, no.5, pp.2559 - 2564

ISSN
0018-9545
DOI
10.1109/TVT.2008.2007796
URI
http://hdl.handle.net/10203/94116
Appears in Collection
EE-Journal Papers(저널논문)
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