arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1401.4237cs.ITmath.ITmath.OC
收藏

认知压缩感知问题

The Cognitive Compressive Sensing Problem

Saeed Bagheri, Anna Scaglione

摘要:

在认知压缩感知(CCS)问题中,认知接收器(CR)试图通过收集潜在的$N$维随机向量的至多$K$个任意投影来优化通过感知潜在的$N$维随机向量而获得的奖励。潜在向量的$N$分量表示子信道状态,其动态地从“忙”变为“空闲”,反之亦然。作为偏向于产生稀疏向量的马尔可夫链。为了确定最佳策略,我们制定了多臂强盗压缩感知(MAB-CS)问题,推广流行的认知频谱感知模型,其中CR可以从$N$子信道中感知$K$,以及压缩感知的典型静态设置,其中CR观察$N$维稀疏向量的$K$线性组合。感测矩阵的CR机会主义选择应该平衡揭示尽可能多维度的潜在向量的状态的期望,同时不超过向量支持不再唯一可识别的限制。

英文摘要:

In the Cognitive Compressive Sensing (CCS) problem, a Cognitive Receiver (CR) seeks to optimize the reward obtained by sensing an underlying $N$ dimensional random vector, by collecting at most $K$ arbitrary projections of it. The $N$ components of the latent vector represent sub-channels states, that change dynamically from "busy" to "idle" and vice versa, as a Markov chain that is biased towards producing sparse vectors. To identify the optimal strategy we formulate the Multi-Armed Bandit Compressive Sensing (MAB-CS) problem, generalizing the popular Cognitive Spectrum Sensing model, in which the CR can sense $K$ out of the $N$ sub-channels, as well as the typical static setting of Compressive Sensing, in which the CR observes $K$ linear combinations of the $N$ dimensional sparse vector. The CR opportunistic choice of the sensing matrix should balance the desire of revealing the state of as many dimensions of the latent vector as possible, while not exceeding the limits beyond which the vector support is no longer uniquely identifiable.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑