【摘要】 结合压缩感知与网络编码的优势,面向单信源异构信宿网络,研究压缩感知观测数据基于线性网络编码的多速率与变速率传输。研究压缩感知观测矩阵与网络编码全局编码核矩阵的联合等效,设计了一种融合有限域压缩感知与线性广播网络编码的精细粒度多速率传输方案;研究压缩感知观测矩阵、线性广播类型保持降维转换矩阵和网络编码全局编码核矩阵的联合等效,基于有限域压缩感知与变速率线性广播,为多媒体数据设计了一种变速率-多速率传输方案。更多还原

【Abstract】 In order to realize multi-rate and variable-rate transmissions for compressive sensed source data in single-source heterogeneous-receiver networks,the mergence of compressive sensing with network coding was studied over finite field.By studying the equivalent relationship between the measurement matrix of compressive sensing and the global encoding kernels of linear broadcast network code,we proposed a fine-granularity multi-rate transmission strategy.Furthermore,by studying the combination of measurement matrix,type-preserving dimension-decreasing conversion matrix and global encoding kernels of linear broadcast,we proposed a variable-rate transmission strategy for multimedia data,based on compressive sensing over finite field and variable-rate linear broadcasts.更多还原