摘要
In order to improve the video transmission performance in Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing （MIMO-OFDM） system, a new scheme, which integrates Multiple Description Coding （MDC）, Low Density Parity Check （LDPC） coding and hybrid space time coding, is proposed in this letter. In particular, a hybrid space time coding algorithm is combined with LDPC codes to perform Unequal Error Protection （UEP） of MDC encoded video streams. Comparing with the UEP transmission with only LDPC codes, the proposed scheme achieves more than ldB gain in terms of Signal to Noise Ratio （SNR） when the Peak Signal to Noise Ratio （PSNR） of reconstructed video is above 30dB.
In order to improve the video transmission performance in Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing (MIMO-OFDM) system,a new scheme,which integrates Multiple Description Coding (MDC),Low Density Parity Check (LDPC) coding and hybrid space time coding,is proposed in this letter. In particular,a hybrid space time coding algorithm is combined with LDPC codes to perform Unequal Error Protection (UEP) of MDC encoded video streams. Comparing with the UEP transmission with only LDPC codes,the proposed scheme achieves more than 1dB gain in terms of Signal to Noise Ratio (SNR) when the Peak Signal to Noise Ratio (PSNR) of reconstructed video is above 30dB.
基金
the National Natural Science Foundation of China (No. 60328103).
