2004
DOI: 10.1109/tcomm.2004.836491
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Transmit Power Allocation for BER Performance Improvement in Multicarrier Systems

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 schem… Show more

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Cited by 78 publications
(69 citation statements)
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“…In [17] optimal power allocation by steepest descent algorithm is introduced. In the beginning initial power to each carrier (p m (0)) and initial step size parameter µ(0) are set.…”
Section: Adaptive Power Allocationmentioning
confidence: 99%
See 3 more Smart Citations
“…In [17] optimal power allocation by steepest descent algorithm is introduced. In the beginning initial power to each carrier (p m (0)) and initial step size parameter µ(0) are set.…”
Section: Adaptive Power Allocationmentioning
confidence: 99%
“…In the beginning initial power to each carrier (p m (0)) and initial step size parameter µ(0) are set. The power is updated accordingly as [17]:…”
Section: Adaptive Power Allocationmentioning
confidence: 99%
See 2 more Smart Citations
“…In general, cognitive wireless radio network is capable to adapt to the outside existing time varying environment. According to the descriptions in [1], the power control has an effective impact on the probability of bit error rate. In [2] joint beamforming and power control using weighted least square algorithm have been performed.…”
Section: Introductionmentioning
confidence: 99%