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首页> 外文会议>Sensor, Mesh and Ad Hoc Communications and Networks Workshops, 2009. SECON Workshops '09 >Cooperative Detection and Spectrum Reuse using a Network Coded Cognitive Control Channel
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Cooperative Detection and Spectrum Reuse using a Network Coded Cognitive Control Channel

机译：使用网络编码的认知控制通道进行协作检测和频谱重用

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摘要

Among the major challenges in the development of effective dynamic spectrum access techniques are the realization of the control channel, the detection of primary users, and the efficient use of the available spectrum. Most of the previous work in this field has addressed only a subset of these issues. In a previous paper we proposed a distributed multi-channel medium access strategy based on a network coded cognitive control channel (NC4), which addresses the issues of the control channel and the spectrum efficiency. In this paper we apply that solution to dynamic spectrum access scenarios. The key feature of this work is the introduction of a cooperative primary user detection strategy which effectively enables the detection and reuse of unused portions of the licensed spectrum. The complete system resulting from this extension, which we call NC4-DSA, has the merits of being fully distributed, not requiring spectrum resources statically allocated for control purposes, and being very suitable for implementation thanks to the use of simple and low cost detection strategies such as energy detection. Furthermore, as we will show in our performance evaluation, it enables efficient opportunistic spectrum access with minimal interference to primary users.
机译：开发有效的动态频谱接入技术所面临的主要挑战包括控制信道的实现，主要用户的检测以及对可用频谱的有效利用。该领域以前的大多数工作仅解决了这些问题的一部分。在先前的论文中，我们提出了一种基于网络编码认知控制信道（NC 4 ）的分布式多信道媒体访问策略，该策略解决了控制信道和频谱效率的问题。在本文中，我们将该解决方案应用于动态频谱访问场景。这项工作的关键特征是引入了合作的主要用户检测策略，该策略可以有效地检测和重用许可频谱中未使用的部分。由该扩展程序产生的完整系统（我们称为NC 4 -DSA）具有以下优点：可以完全分发，不需要静态分配频谱资源用于控制目的，并且由于其扩展性而非常适合实施。使用简单且低成本的检测策略，例如能量检测。此外，正如我们将在性能评估中显示的那样，它可以实现高效的机会频谱访问，并且对主要用户的干扰最小。

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