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arXiv 1201.1964cs.NIcs.GT
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认知无线电动态频谱接入技术综述

A Survey on Dynamic Spectrum Access Techniques for Cognitive Radio

Anita Garhwal, Partha Pratim Bhattacharya

摘要:

认知无线电是一种利用频谱资源的新技术。CR系统的关键特征是感知电磁环境以适应其操作并动态地改变其无线电操作参数。动态接入未使用的频谱带的技术被称为动态频谱接入(DSA)。动态频谱接入技术有助于最小化未使用的频谱带。本文讨论了认知无线电的主要功能,即频谱感知、频谱管理、频谱移动和频谱共享。然后讨论了DSA模型,以及DSA的不同方法,如命令和控制,独占使用,主许可用户共享使用和共享方法。本文还讨论了集中式结构中频谱分配的博弈论方法,如Bertrand博弈模型、马尔可夫模型和基于模糊逻辑的方法,并给出了结果。

英文摘要:

Cognitive radio (CR) is a new paradigm that utilizes the available spectrum band. The key characteristic of CR system is to sense the electromagnetic environment to adapt their operation and dynamically vary its radio operating parameters. The technique of dynamically accessing the unused spectrum band is known as Dynamic Spectrum Access (DSA). The dynamic spectrum access technology helps to minimize unused spectrum bands. In this paper, main functions of Cognitive Radio (CR) i.e. spectrum sensing, spectrum management, spectrum mobility and spectrum sharing are discussed. Then DSA models are discussed along with different methods of DSA such as Command and Control, Exclusive-Use, Shared Use of Primary Licensed User and Commons method. Game-theoretic approach using Bertrand game model, Markovian Queuing Model for spectrum allocation in centralized architecture and Fuzzy logic based method are also discussed and result are shown.

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。

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