In this letter, we propose simple bit-error aware lossless compression algorithms for compression and transmission of waveform data in noisy channels. The developed algorithms consist of two stages. The first stage ap...
详细信息
In this letter, we propose simple bit-error aware lossless compression algorithms for compression and transmission of waveform data in noisy channels. The developed algorithms consist of two stages. The first stage applies linear prediction and the second stage uses the developed residue coder, bi-level block coding or interval entropy coding, in which we show how to choose the optimal coding parameters for compressing the residue sequence from the first stage. We only encode the linear prediction and bi-level block coding or entropy coding parameters using a forward error correction scheme such as (7,4) Hamming codes, leaving residue sequence or residue offset sequence as they are, in order to preserve the performance of compression ratio. Our experiments show that the developed algorithms achieve high compression ratios and the recovered waveforms have a good signal quality when the bit error rate is equal to or less than 0.001.
In this paper, we propose hit-error aware lossless compression algorithms for color image compression subject to hit-error rate during transmission. Each of our proposed algorithms contains three stages. The first sta...
详细信息
ISBN:
(纸本)9781728109275
In this paper, we propose hit-error aware lossless compression algorithms for color image compression subject to hit-error rate during transmission. Each of our proposed algorithms contains three stages. The first stage converts the RUB images to YCrCb images. The next stage uses the predictive encoder to generate the residue sequence. A genetic algorithm is adopted to search the best combination of the color transformation and prediction. At the last stage, the generated residue sequence by predictive coding is encoded. Three residue encoding methods are investigated, including bi-level block coding, or interval Huffman coding or Huffman coding. To protect the bit stream from hit errors during transmission, (7,4) Hamming code is used to protect the color transformation information, predictor type and parameters, and residue coding parameters. Our experimental results validate the coding performances in terms of the compression ratio (CR) and peak signal to noise ratio (PSTR).
暂无评论