Genetic algorithm approach for adaptive power and subcarrier allocation in multi-user OFDM systems

Y. B. Reddy; Mort Naraghi-Pour

doi:10.1117/12.717940

30 April 2007 Genetic algorithm approach for adaptive power and subcarrier allocation in multi-user OFDM systems

Y. B. Reddy, Mort Naraghi-Pour

Proceedings Volume 6560, Intelligent Computing: Theory and Applications V; 65600K (2007) https://doi.org/10.1117/12.717940
Event: Defense and Security Symposium, 2007, Orlando, Florida, United States

Abstract

In this paper, a novel genetic algorithm application is proposed for adaptive power and subcarrier allocation in multi-user Orthogonal Frequency Division Multiplexing (OFDM) systems. To test the application, a simple genetic algorithm was implemented in MATLAB language. With the goal of minimizing the overall transmit power while ensuring the fulfillment of each user's rate and bit error rate (BER) requirements, the proposed algorithm acquires the needed allocation through genetic search. The simulations were tested for BER 0.1 to 0.00001, data rate of 256 bit per OFDM block and chromosome length of 128. The results show that genetic algorithm outperforms the results in [3] in subcarrier allocation. The convergence of GA model with 8 users and 128 subcarriers performs better in power requirement compared to that in [4] but converges more slowly.

Citation Download Citation

Y. B. Reddy and Mort Naraghi-Pour "Genetic algorithm approach for adaptive power and subcarrier allocation in multi-user OFDM systems", Proc. SPIE 6560, Intelligent Computing: Theory and Applications V, 65600K (30 April 2007); https://doi.org/10.1117/12.717940

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