Visual communication via trellis coding and transmission energy allocation
Fady Alajaji, Saud A. Al-Semari, Philippe Burlina · IEEE Transactions on Communications · 1999
An unequal error protection approach for the reliable communication of visual information over additive white Gaussian noise channels is proposed and studied. This method relies on a bandwidth-efficient coded modulation scheme that employs selective channel coding and transmission energy allocation in conjunction with sequence maximum a posteriori soft-decision detection. Experimental results indicate that this scheme exhibits graceful performance degradation as the channel conditions deteriorate and provides substantial objective and subjective improvements over uncoded and equal-error protection systems. Coding gains of up to 4 dB in E/sub b//N/sub o/ are achieved.