标题： 时间最优的频谱感知 显示英文标题

标题： Time Optimal Spectrum Sensing

摘要： 频谱感知是认知无线电环境中的基本操作。 它通过扫描频段来提供关于频谱可用性的信息。 通常会给定固定的时间来扫描各个频段。 大多数情况下，不会使用频谱频段中流量的历史信息。 但这些信息可以告诉我们特定频段的繁忙程度。 因此，与其为每个频段分配固定的时间进行扫描，不如给占用较少的频段更多时间，而给占用较多的频段较少时间。 本文中，我们将时间分配问题形式化为整数线性规划和源编码问题。 时间分配问题通过相关的随机优化问题来求解。 显示英文摘要

摘要： Spectrum sensing is a fundamental operation in cognitive radio environment. It gives information about spectrum availability by scanning the bands. Usually a fixed amount of time is given to scan individual bands. Most of the times, historical information about the traffic in the spectrum bands is not used. But this information gives the idea, how busy a specific band is. Therefore, instead of scanning a band for a fixed amount of time, more time can be given to less occupied bands and less time to heavily occupied ones. In this paper we have formulated the time assignment problem as integer linear programming and source coding problems. The time assignment problem is solved using the associated stochastic optimization problem.