Low Complexity Precoded Greedy Power Allocation Algorithms for OFDM Communication Systems

Najib A. Odhah, Moawad I. Dessouky, Waleed Al-Hanafy, Fathi E. Abd El-Samie

Department of Electronics and Electrical Communications, Faculty of Electronic Engineering, Menoufia University, Menouf, Egypt.

DOI: 10.4236/jsip.2012.32025                

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.

Keywords

OFDM; Uniform Power Allocation; Greedy Algorithm; Throughput Enhancement; MRC Precoding

Conflicts of Interest

The authors declare no conflicts of interest.

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