Space-time diversity for multimedia delivery over wireless channels

A source-channel matched layered space-time d iwsi ty technique is presented for reliable delivery of lay er coded multimedia data through wireless channels. The transmission system is transformed t o multiple subchannels and each associated with different div ersity gain, therefore different error performance. Similarly to the parallel transmission proposed for ADSL[9], we develop a parallel transmission scheme t o match the source layers to the channel layers. P ow er con trol alters the error performance of each channel layer to ac hiev e the optimal performance.