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  本文選題：認(rèn)知無線電 + 博弈論��； 參考：《哈爾濱工業(yè)大學(xué)》2014年碩士論文

【摘要】：用戶數(shù)量的增加給已有的頻譜資源利用策略造成了較大的挑戰(zhàn)。認(rèn)知無線電技術(shù)的出現(xiàn)，則有效地提供了這個問題的解決方案。科研工作人員和學(xué)者們越來越發(fā)現(xiàn)此項技術(shù)對加大系統(tǒng)容量和提高頻譜資源的利用效率有較為顯著的作用。 本文主要針對認(rèn)知無線電技術(shù)中的功率控制技術(shù)進(jìn)行了研究，利用博弈論的思想來優(yōu)化用戶的功率控制問題。由于處在認(rèn)知無線電系統(tǒng)中的用戶總是在和其他用戶就某項具體性能指標(biāo)進(jìn)行博弈，所以通過博弈論的思想可以較為準(zhǔn)確地對其進(jìn)行分析。對應(yīng)于不同的博弈模型算法，本文深入分析并就相應(yīng)指標(biāo)給出了仿真結(jié)果。本論文的研究內(nèi)容如下： 首先，本文對認(rèn)知無線電中的相關(guān)內(nèi)容進(jìn)行研究。其中，，對其定義、模型、特點以及發(fā)展進(jìn)行了研究分析；對其四種關(guān)鍵技術(shù)亦有闡述；針對認(rèn)知無線電中的功率控制問題分三個方面進(jìn)行了重點研究。 其次，根據(jù)博弈論的概念和發(fā)展，對納什均衡的概念和相應(yīng)證明進(jìn)行了研究；并就基于博弈論的功率控制的算法分兩個方面進(jìn)行研究，將其細(xì)化為基于非合作博弈的功率控制算法和引入代價函數(shù)的非合作博弈的功率控制算法；后通過比較兩種不同的功控博弈模型來深入研究基于信干噪比代價函數(shù)的非合作博弈功控技術(shù)。 最后，本文提出了一種全新的基于信干噪比代價函數(shù)的功控博弈效用函數(shù)，并給出了新效用函數(shù)納什均衡存在性和唯一性的證明，后亦根據(jù)與經(jīng)典功控博弈模型的對比進(jìn)行了分析和仿真。較之經(jīng)典博弈模型的效用函數(shù)，新效用函數(shù)通過數(shù)學(xué)上的設(shè)計，在不犧牲用戶的信干噪比和算法復(fù)雜度的情況下，提高了各個用戶的公平性指標(biāo)。
[Abstract]:The increase in the number of users poses a great challenge to the existing strategies for the utilization of spectrum resources.The emergence of cognitive radio technology effectively provides a solution to this problem.More and more researchers and scholars find that this technology plays an important role in increasing the system capacity and improving the utilization efficiency of spectrum resources.In this paper, the power control technology in cognitive radio technology is studied, and the power control problem of users is optimized by using the idea of game theory.Since users in cognitive radio systems are always playing games with other users on a specific performance index, they can be accurately analyzed by the idea of game theory.Corresponding to different game model algorithms, this paper deeply analyzes and gives the simulation results on the corresponding indexes.The contents of this thesis are as follows:Firstly, this paper studies the related contents of cognitive radio.Among them, the definition, model, characteristics and development of its research and analysis; its four key technologies have also been elaborated; the cognitive radio power control problem is focused on three aspects.Secondly, according to the concept and development of game theory, the concept and corresponding proof of Nash equilibrium are studied, and the algorithm of power control based on game theory is studied in two aspects.The power control algorithm based on the non-cooperative game and the power control algorithm based on the cost function are classified into two parts: one is the non-cooperative game and the other is the power control algorithm based on the cost function.Then, by comparing two different power control game models, the non-cooperative game power control technology based on the cost function of signal-to-noise ratio is studied in depth.Finally, a new utility function of power-control game based on the cost function of signal-to-noise ratio is proposed, and the existence and uniqueness of the Nash equilibrium of the new utility function are proved.After that, the analysis and simulation are carried out according to the comparison with the classical power control game model.Compared with the utility function of the classical game model, the new utility function improves the fairness index of each user without sacrificing the signal-to-noise ratio and the complexity of the algorithm through mathematical design.
【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2條

1 李莉;劉晶;周小平;凌洪濤;;基于發(fā)射功率控制的動態(tài)頻譜接入篩選算法[J];電波科學(xué)學(xué)報;2013年05期

2 程世倫;楊震;張暉;;新的認(rèn)知無線電功率控制博弈算法[J];通信學(xué)報;2007年03期

本文編號：1767648