Application of Rice arithmetic based on two dimensional difference prediction in image data compression;

According to the practical application of cab signaling device on railway site,a loss-free compression method for the waveform data recorded by cab signaling recorder based on integer lifting wavelet transform and Rice coding is proposed in this paper.

Considering the von Mises distribution as the received multipath power density distribution versus the AOA of scatter components, a formula for multipath angular spread corresponding to this distribution is presented in multi-antenna Rice channels, and an approximate expression for spatial correlation coefficient between compact antenna elements is proposed in small-scale Rice fading channels.

In this paper, for regular LDPC codes on Rice channel, DDE for BP,BP-based and offset BP-based decoding algorithm were compared on different quantization level and step.

Presents first image coding methods and then a new guality image compression method based on edge direction, by which an image is first partitioned into blocks and a direction predictor is then adaptively selected for each block with minimum prediction error and an efficient adaptive rice coder is then applied with residual image quantized.

Rice condition numbers of QR and Cholesky factorizations;