基于圖論的認(rèn)知無線電頻譜與功率聯(lián)合分配算法研究
[Abstract]:With the rapid development of wireless communication technology, the demand for spectrum resources increases sharply. At present, the fixed spectrum allocation strategy seriously restricts the sustainable development of wireless communication and service applications. Cognitive radio (Cognitive Radio, CR) technology can actively detect the wireless communication environment, dynamically access the idle band used by unauthorized users, and realize the sharing of spectrum resources, thus significantly improving the capacity and spectrum efficiency of the communication system. Resource allocation is the key technology of cognitive radio and an important link to realize cognitive radio. This paper mainly studies the joint optimal allocation algorithm of spectrum and power resources based on graph theory model in cognitive radio system. The main work is as follows: (1) the research background and significance of resource allocation are described. This paper summarizes the research status at home and abroad, introduces the cognitive radio resource allocation technology and the basic theory of graph theory. (2) aiming at the problem that the existing graph theory model can not realize the joint allocation of spectrum and power and the low spectrum efficiency, A joint spectrum and power allocation algorithm (called JSPA-IGTM algorithm) based on improved graph theory is proposed. The interference between secondary users is fully considered and the interference between secondary users is quantized in the algorithm model. The interference threshold vector is used to measure the interference degree, and the spectrum and the corresponding power are allocated according to the interference degree. Particle swarm optimization (PSO) is used to realize the optimization process of the joint resource allocation of the JSPA-IGTM algorithm. The simulation results show that compared with the resource allocation algorithm based on the existing graph theory model, the JSPA-IGTM algorithm effectively improves the spectrum efficiency. (3) Particle Swarm Optimization (Particle Swarm Optimization,). PSO) algorithm is easy to fall into the local optimization problem to realize the joint optimal allocation of spectrum and power. An improved algorithm (JSPA-IPH algorithm for short) is proposed to realize the optimal allocation of spectrum and power. This algorithm combines the advantages of PSO algorithm and harmony search (Harmony Search, HS) algorithm, that is, JSPA-IPH algorithm not only has the good global optimization ability of HS algorithm, but also has the characteristics of fast convergence speed of PSO algorithm. The simulation results show that the JSPA-IPH algorithm is well suited to the improved joint resource allocation graph theory model, and the throughput performance of the system is significantly improved.
【學(xué)位授予單位】:東北大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TN925
【相似文獻(xiàn)】
相關(guān)期刊論文 前10條
1 А.Ш.塔什普拉托夫;王國欽;;驅(qū)動機(jī)功率的測定方法[J];國外艦船技術(shù)(特輔機(jī)電設(shè)備類);1982年02期
2 韓曉東,陳曉峰;大功率UPS系統(tǒng)設(shè)計(jì)的基本要素[J];中國金融電腦;2001年03期
3 杜建俊;郭寶;;TD-SCDMA與TD-LTE共模RRU功率配置分析[J];通信企業(yè)管理;2014年04期
4 李萬益;劉海林;;基于多目標(biāo)進(jìn)化算法的WCDMA功率優(yōu)化配置研究[J];計(jì)算機(jī)工程與設(shè)計(jì);2011年12期
5 張濮;劉越;劉小明;;基于不平衡損耗非線性光纖環(huán)鏡的雙波長功率均衡實(shí)驗(yàn)研究[J];中國激光;2005年12期
6 趙騰云;熊少英;劉毓;;受激拉曼散射效應(yīng)對鞏稼民模型中密集波分信道功率轉(zhuǎn)移影響分析[J];寧夏大學(xué)學(xué)報(bào)(自然科學(xué)版);2012年04期
7 王英赫;宋梅;陳浩;張英海;;Ad Hoc網(wǎng)絡(luò)中采用功率調(diào)整的單向鏈路通告策略[J];北京郵電大學(xué)學(xué)報(bào);2012年05期
8 呂濤;施偉斌;;無線傳感器網(wǎng)絡(luò)自適應(yīng)功率調(diào)整機(jī)制研究[J];信息技術(shù);2014年03期
9 于衛(wèi)波;牛大偉;米志超;董超;;車載網(wǎng)絡(luò)中基于功率調(diào)整的公平性策略[J];電子科技大學(xué)學(xué)報(bào);2011年05期
10 呂濤;施偉斌;;一種適用于WSN的功率自適應(yīng)調(diào)整方法[J];數(shù)據(jù)通信;2013年06期
相關(guān)會議論文 前3條
1 媄建成;陳偉基;;智能式功率因ex自R請躋系統(tǒng)[A];1995年中國智能自動化學(xué)術(shù)會議暨智能自動化專業(yè)委員會成立大會論文集(下冊)[C];1995年
2 馮愛華;;第十五章 第三節(jié) 功率[A];河北省教師教育學(xué)會優(yōu)秀課題成果論壇論文集[C];2012年
3 梅輝;;WCDMA系統(tǒng)中基站的功率規(guī)劃問題[A];2005'中國通信學(xué)會無線及移動通信委員會學(xué)術(shù)年會論文集[C];2005年
相關(guān)碩士學(xué)位論文 前10條
1 張超;采用超級電容的直驅(qū)風(fēng)電機(jī)組故障穿越和功率平滑控制[D];內(nèi)蒙古工業(yè)大學(xué);2015年
2 向劍;給定調(diào)度功率的風(fēng)力發(fā)電場功率控制[D];重慶大學(xué);2015年
3 孫翊簫;基于圖論的認(rèn)知無線電頻譜與功率聯(lián)合分配算法研究[D];東北大學(xué);2014年
4 賀電;大型風(fēng)電場短期功率預(yù)測研究[D];北京交通大學(xué);2011年
5 王奇佳;認(rèn)知無線網(wǎng)絡(luò)的頻譜功率聯(lián)合分配策略研究[D];電子科技大學(xué);2013年
6 金泉;長距離無線mesh網(wǎng)絡(luò)中鏈路自適應(yīng)速率和功率聯(lián)合調(diào)整算法[D];天津大學(xué);2011年
7 高丹丹;基于投影尋蹤算法的間歇式電源短期功率預(yù)測[D];華北電力大學(xué);2013年
8 劉童玲;激光標(biāo)刻中激光功率的適時(shí)控制算法研究[D];華中科技大學(xué);2007年
9 季小鵬;GSM網(wǎng)絡(luò)智能優(yōu)化算法研究[D];北京郵電大學(xué);2012年
10 王維;協(xié)作傳輸系統(tǒng)中功率優(yōu)化技術(shù)研究[D];北京郵電大學(xué);2014年
,本文編號:2463892
本文鏈接:http://sikaile.net/kejilunwen/wltx/2463892.html