A Novel Genetic Multi-User Receiver Based on Wavelet Transform and Hamming Sphere Solution Space

This paper proposes a novel genetic multi-user receiver structure based on wavelet transform and the concept of Hamming sphere solution space. Firstly, wavelet transform is introduced in the transmitter and receiver to improve the coarse detection. Then, this coarse detection result is selected as the input chromosome for genetic evolution to obtain more accurate detection. Many researches on genetic algorithm based multiuser detection indicate initial population has crucial effects on the performance of detectors. This paper proposes a simple but very effective method to obtain the initial population by using the concept of Hamming sphere solution space, which can make full use of the information embedded in the input chromosome. Simulation results show the proposed receiver not only achieves lower Bit Error Ratio (BER) and better near-far resistant ability, but also converges quickly.