Bit and Power Allocation Algorithm for OFDM System

Yu GuanDing; Zhang ChaoYang; Chou PeiLiang

Volume 27 Issue 9

Sep. 2005

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Yu GuanDing, Zhang ChaoYang, Chou PeiLiang. Bit and Power Allocation Algorithm for OFDM System[J]. Journal of Electronics & Information Technology, 2005, 27(9): 1479-1482.

Citation:

Yu GuanDing, Zhang ChaoYang, Chou PeiLiang. Bit and Power Allocation Algorithm for OFDM System[J]. Journal of Electronics & Information Technology, 2005, 27(9): 1479-1482.

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Bit and Power Allocation Algorithm for OFDM System

Received Date: 2004-04-08
Rev Recd Date: 2004-08-11
Publish Date: 2005-09-19

Abstract

Abstract

The maximization of data rate under the constraint of total transmit power and bit error rate is a considerable issue in OFDM system. Recognizing that the number of bits on each subcarrier must be a discrete number for real systems, this paper proposed two bit allocation algorithms which are modified greedy algorithm and water filling level binary searching algorithm. Simulation results show that the complexity of modified greedy algorithm is 10% of that of greedy algorithm and 5-7 iterations are enough for 0.5% data rate loss when SNR is above 10dB.

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References(1)

References

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