TY - GEN
T1 - Uplink Spatial Division Multiple Access (SDMA) optimization of smart antennas by phase-amplitude perturbations based on memetic algorithms
AU - Hsu, Chao Hsing
AU - Chen, Chih Hui
AU - Wu, Chi Fei
AU - Shyr, Wen-Jye
PY - 2008/9/30
Y1 - 2008/9/30
N2 - A novel method based on the memetic algorithm for uplink Spatial Division Multiple Access (SDMA) optimization technique of smart antennas via the phase-amplitude perturbation method is proposed. The array factor formula is deduced to search the optimal weighting vector of the array factor of a smart antenna. In a smart antenna system, one user's signal must be considered as other users' interfering signal. An optimal radiation pattern of a smart antenna can not only adjustably suppress interferers by placing nulls at the directions of the interfering sources but also provide a maximum main lobe in the direction of the desired signals at the same time so that SDMA can be come true. In order to achieve this goal, a new convergent method referred as the two-way convergent method for memetic algorithms is proposed.
AB - A novel method based on the memetic algorithm for uplink Spatial Division Multiple Access (SDMA) optimization technique of smart antennas via the phase-amplitude perturbation method is proposed. The array factor formula is deduced to search the optimal weighting vector of the array factor of a smart antenna. In a smart antenna system, one user's signal must be considered as other users' interfering signal. An optimal radiation pattern of a smart antenna can not only adjustably suppress interferers by placing nulls at the directions of the interfering sources but also provide a maximum main lobe in the direction of the desired signals at the same time so that SDMA can be come true. In order to achieve this goal, a new convergent method referred as the two-way convergent method for memetic algorithms is proposed.
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U2 - 10.1109/ICICIC.2008.587
DO - 10.1109/ICICIC.2008.587
M3 - Conference contribution
AN - SCOPUS:52449134592
SN - 9780769531618
T3 - 3rd International Conference on Innovative Computing Information and Control, ICICIC'08
BT - 3rd International Conference on Innovative Computing Information and Control, ICICIC'08
T2 - 3rd International Conference on Innovative Computing Information and Control, ICICIC'08
Y2 - 18 June 2008 through 20 June 2008
ER -