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Data transmission using self-organizing feature map (SOFM) based vector quantizer (VQ) and channel optimized vector quantizer (COVQ) with various space-time trellis codes (STTC) over wireless channels are studied. It is interesting to note that in a SOFM-STTC system, even with a weak STTC, the overall performance in terms of reconstruction error does not degrade a lot, compared with a stronger STTC. Hence, a system of low complexity but satisfactory performance could be built. Our simulation results also show that the performance of SOFM-STTC is marginally worse than that of COVQ.
Information, Communications and Signal Processing, 2003 and Fourth Pacific Rim Conference on Multimedia. Proceedings of the 2003 Joint Conference of the Fourth International Conference on (Volume:3 )
Date of Conference: 15-18 Dec. 2003