Resource allocation for MIMO-OFDM video transmission systems based on joint source-channel coding

To improve the performance of MIMO-OFDM video transmission systems on the limitation of wireless bandwidth and transmit power, we propose a resource allocation algorithm with joint source-channel coding (JSCC) based on H.264 video compression standard and RCPT channel coding. According to different thresholds of the average SNR of subchannels, the algorithm dynamically allocates the source coding parameters of video information and the channel coding parameters of RCPT, which realizes unequal error protection (UEP) for the video information of different importance. Through the bit and power allocation based on MQAM modulation and the subspace allocation based on beamforming technology for different subcarriers, it also makes full use of space-frequency domain resources. The simulation results indicate that the algorithm improves the adaptability of video transmission systems in different wireless environments and the effect of the video retrieval.