Abstract
Joint Source and Channel Coding (JSCC) considers the source coding and channel coding of communication system to optimize the design. Firstly, an Unequal Error Protection (UEP) scheme based on the Rate Compatible Punctured Turbo(RCPT) code is proposed. The simulation results show that the UEP scheme is superior to the Equal Error Protection (EEP) scheme when the channel rate is fixed. Both the objective data and subjective video show that the UEP scheme is superior to the EEP scheme without increasing channel redundancy and achieves channel coding design based on source characteristics. Secondly, using UEP schemes with different bit rates, a channel adaptive JSCC system is designed. The system can adjust the bit rate allocation between sources and channels adaptively according to channel conditions, and realize the joint source and channel coding. Experiments show that the video restoration quality of this scheme is better than that of the single UEP scheme.
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