Low Complexity Precoded Greedy Power Allocation Algorithms for OFDM Communication Systems

• 作者: Fathi E. Abd El-Samie Moawad I. Dessouky Najib A. Odhah Waleed Al-Hanafy
• 来源期刊: 信号与信息处理(英文)
• 学科: 工学
• 关键词: OFDM Uniform Power Allocation GREEDY Algorithm THROUGHPUT Enhancement MRC PRECODING
• 年，卷（期）: 2012,（2）
• 页码范围: 185-191
• 页数: 7页
• 分类号: TN92

摘要

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.