【摘要】：無線通信領(lǐng)域的發(fā)展非常依賴于頻譜資源的多少，改善頻譜的使用方案是當(dāng)下無線通信領(lǐng)域發(fā)展的主要內(nèi)容。認(rèn)知無線電技術(shù)從提出至今就被認(rèn)為是改善頻譜使用的最佳方案之一。而頻譜聚合技術(shù)卻又是近幾年新興的技術(shù)，它在頻譜分配領(lǐng)域尤其獨特的優(yōu)勢。在本文中將認(rèn)知無線電技術(shù)和頻譜聚合技術(shù)相結(jié)合在頻譜分配方面體現(xiàn)出了很大的優(yōu)勢。 本文首先對認(rèn)知無線電做了一個全面的介紹。然后進(jìn)入本文的主要研究改善點中的第一部分：認(rèn)知無線電的中頻譜聚合技術(shù)的靜態(tài)頻譜分配算法，，靜態(tài)頻譜聚合技術(shù)的分配算法中，分別從認(rèn)知用戶數(shù)、頻譜利用率、聯(lián)合考慮認(rèn)知用戶數(shù)以及頻譜利用率三個基本點進(jìn)行了研究。 在靜態(tài)頻譜聚合技術(shù)實現(xiàn)頻譜的分配當(dāng)中，核心創(chuàng)新點在于將空閑的頻譜碎片的組合最大化以及對于接入的認(rèn)知用戶進(jìn)行博弈挑選，選擇接入的用戶必須和空閑的頻譜碎片組合能夠按照優(yōu)化目標(biāo)要求的方式進(jìn)行結(jié)合達(dá)到研究需要優(yōu)化的目標(biāo)的目的。 本文的另一個核心研究內(nèi)容為在頻譜聚合技術(shù)下的動態(tài)頻譜分配方面引入了頻譜池系統(tǒng)，在NC-OFDM背景下，實現(xiàn)動態(tài)頻譜的分配和管理。頻譜池系統(tǒng)的引入解決了認(rèn)知無線電技術(shù)在頻譜分配領(lǐng)域面臨的需要提高頻譜利用率，減少認(rèn)知用戶傳輸過程中的頻譜檢測時間以及頻譜使用中如何減少認(rèn)知用戶頻譜切換的問題。 頻譜池系統(tǒng)實現(xiàn)動態(tài)頻譜的分配當(dāng)中通過建立多級頻譜池，并將頻譜池進(jìn)行優(yōu)先級排序的方法，在授權(quán)用戶和認(rèn)知用戶接入系統(tǒng)中時給予不同的接入方式的形式解決了認(rèn)知無線電的頻譜分配當(dāng)中遇到的頻譜切換次數(shù)高、用于頻譜檢測的時間長且頻譜利用率的提高有限的問題。并通過仿真驗證了頻譜池分配方式相較于經(jīng)典的即時接入方式具有較好的實驗結(jié)果。 最后，本文對研究的核心內(nèi)容做了一個基本的總結(jié)，并對未來的研究方向做了一個基本的展望。
[Abstract]:The development of wireless communication is very dependent on the number of spectrum resources. Improving the use of spectrum is the main content of the current wireless communication field. Cognitive radio technology has been considered to be one of the best ways to improve spectrum use since its inception. Spectrum polymerization is a new technology in recent years, and it has a unique advantage in spectrum allocation. In this paper, the combination of cognitive radio technology and spectrum aggregation technology shows a great advantage in spectrum allocation. This paper first gives a comprehensive introduction to cognitive radio. Then it enters the first part of the main research point of this paper: the static spectrum allocation algorithm of the cognitive radio technology, the static spectrum allocation algorithm of the static spectrum aggregation technology, the number of cognitive users, the spectrum utilization ratio, respectively. The cognitive users and spectrum efficiency are considered in this paper. In the static spectrum aggregation technology to achieve spectrum allocation, the core innovation is to maximize the combination of free spectrum fragments and game selection for access cognitive users. The user who chooses access must combine with the free spectrum fragment to achieve the goal of optimization. Another core of this paper is to introduce the spectrum pool system into the dynamic spectrum allocation under the technology of spectrum aggregation, and to realize the dynamic spectrum allocation and management under the background of NC-OFDM. The introduction of spectrum pool system solves the need of cognitive radio technology in the field of spectrum allocation to improve the spectrum efficiency. How to reduce spectrum detection time in cognitive user transmission and how to reduce spectrum switching in spectrum usage. The spectrum pool system realizes the dynamic spectrum allocation by establishing a multilevel spectrum pool and prioritizing the spectrum pool. Giving different access modes to authorized users and cognitive users in the system resolves the high frequency of spectrum switching encountered in the spectrum allocation of cognitive radio. The problem of long time for spectrum detection and limited improvement of spectrum efficiency. The simulation results show that the spectrum cell allocation method has better experimental results than the classical instant access method. Finally, this paper makes a basic summary of the core content of the research, and makes a basic outlook for the future research direction.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN925

【參考文獻(xiàn)】

相關(guān)期刊論文 前5條

1 盧前溪;王文博;傅龍;王瑋;彭濤;;認(rèn)知無線電網(wǎng)絡(luò)子載波和功率分配[J];北京郵電大學(xué)學(xué)報;2008年04期

2 楊春剛;李建東;;認(rèn)知網(wǎng)絡(luò)中基于納什議價解的功率控制方法[J];北京郵電大學(xué)學(xué)報;2009年03期

3 徐斌陽;李健穎;李少謙;;認(rèn)知無線電系統(tǒng)頻譜自適應(yīng)調(diào)度算法設(shè)計[J];電子科技大學(xué)學(xué)報;2008年06期

4 李圣安;王保云;;一種新的智能無線技術(shù)——認(rèn)知無線電技術(shù)[J];電信快報;2005年11期

5 張然然;劉思楊;謝剛;劉元安;;認(rèn)知無線電下行鏈路中的頻譜共享算法[J];電子與信息學(xué)報;2009年05期

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