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Low Complexity Precoded Greedy Power Allocation Algorithms for OFDM Communication Systems

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Author(s): Najib A. Odhah | Moawad I. Dessouky | Waleed Al-Hanafy | Fathi E. Abd El-Samie

Journal: Journal of Signal and Information Processing
ISSN 2159-4465

Volume: 03;
Issue: 02;
Start page: 185;
Date: 2012;
Original page

Keywords: OFDM | Uniform Power Allocation | Greedy Algorithm | Throughput Enhancement | MRC Precoding

ABSTRACT
In this paper, an enhanced greedy bit and power allocation algorithms for orthogonal frequency division multiplexing (OFDM) communication systems are introduced. These algorithms combine low complexity greedy power allocation algorithms with a simplified maximum ratio combining (MRC) precoding technique at the transmitter for maximizing the average data throughput of OFDM communication systems. Results of computer simulations show that precoding is an effective technique for improving the throughput performance of the proposed bit and power allocation algorithms.
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