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Many standards for digital TV use the MPEG-2 Transport Stream for multiplexing several programs into one stream. In the case of poor reception, data also get lost in the demultiplexing process due to bit errors in the Transport Stream packet headers. In this paper we propose an algorithm which adjusts disturbed information in the packet headers to deliver more audio data to the source decoder. We...
In this paper, we develop an approach toward joint source-channel coding (JSCC) for JPEG compressed image transmission. First, a data partition (DP) technique is employed to divide the JPEG bitstream into three groups, namely, Huffman codes, DC coefficients and AC coefficients. Second, we combine the rate-compatible punctured convolutional (RCPC) codes to protect the coded data according to channel...
Adaptive ARQ is applied to a wireless network, altering retransmission policy according to content importance. By a video deadline-aware buffer discard policy, repeated transmission of expired packets and buffer overflow are mitigated, helping to maintain video quality. Multiple deadlines are applied according to picture type. The combined policy is demonstrated for a bluetooth piconet achieving fast...
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