Iterative H.264 video decoding using mutual information exchangeable DSTS and SP modulation

In this paper we analyze the impact of unequal error protection (UEP) over Data-Partitioned (DP) H.264 video transmission over Correlated Rayleigh fading channel using Recursive Systematic Convolution Codes (RSC). Multi transmit and receive antenna system with Differential Space Time Spreading (DSTS) is employed in combination with Sphere Packing (SP) Modulation to demonstrate the overall BER reduction and PSNR improvement of the received bit-stream. Furthermore, Iterative Soft Bit Source Decoding (SBSD) along with Channel Decoding mechanism is employed, which results in mutual information exchange to correct possible errors and results in the enhanced quality of the final decoded video. Similarly the performance improvement due to additional Exit-Optimized Over-complete Mapping(OM) is also presented. It is important to note that the overall bitrate of all the consider coding schemes is kept constant, while conducting the performance comparison. In UEP important Partitions in H.264 video stream are more error protected compare to less important Partitions. It is observed that using DSTS along with SBSD and Over-complete Mapping results in BER reduction and PSNR improvement of the received H.264 Coded bit-stream.