Convex Optimization
Minimum BER beamforming in the RF domain for OFDM transmissions and linear receivers
ICASSP '09 Proceedings of the 2009 IEEE International Conference on Acoustics, Speech and Signal Processing
Some extended results on the search for good convolutional codes
IEEE Transactions on Information Theory
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For coded SIMO-OFDM systems, pre-DFT combining was previously shown to provide a good trade-off between error-rate performance and processing complexity. Max-sum SNR and max-min SNR are two reasonable ways for obtaining these combining weights. In this letter, we employ multiobjective optimization to further reveal the suitability and limitation of these two criteria. Our results show that: 1) Neither maxsum SNR nor max-min SNR is universally good; 2) For better error-rate performance, the means for weight calculation should be adapted according to the capability of the error-correcting code used, and multiobjective optimization can help in the determination.