A Fast Adaptive Transmit Power and Bit Allocation in OFDM System

Juan Wen; Qi Ming Tian

doi:10.4028/www.scientific.net/AMR.765-767.444

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 765-767A Fast Adaptive Transmit Power and Bit Allocation...

A Fast Adaptive Transmit Power and Bit Allocation in OFDM System

Abstract:

In this paper, we propose a fast and optimal adaptive transmit power and bit allocation algorithm, which is called Bisection Searching Level (BSL) for wireless OFDMA systems. The algorithm aims at maximization of data rate under the constraints of total transmit power and bit error rate (BER). BSL is based on water pouring approach, and adopt bisection algorithm to find the water pouring level under discrete bit restriction. Both theoretical analysis and simulation results demonstrate the optimality of our proposed algorithm.

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Periodical:

Advanced Materials Research (Volumes 765-767)

Pages:

444-447

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.765-767.444

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Online since:

September 2013

Authors:

Juan Wen, Qi Ming Tian

Keywords:

Bit Allocation, BSL, OFDMA, Optimal Solution

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