本文關(guān)鍵詞：異構(gòu)網(wǎng)絡(luò)資源分配優(yōu)化算法研究　出處：《南京郵電大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 異構(gòu)網(wǎng)絡(luò) 資源分配 頻譜感知 感知時(shí)間 功率分配 頻率分配 聯(lián)合優(yōu)化

【摘要】：隨著人們對(duì)無(wú)線通信服務(wù)質(zhì)量的要求不斷提高,無(wú)線數(shù)據(jù)流量呈現(xiàn)出爆發(fā)式的增長(zhǎng)。通信系統(tǒng)中的頻譜和能量都是稀缺資源,急需更加有效的管理和利用。借助頻譜感知等新技術(shù),宏蜂窩與小蜂窩組成的蜂窩異構(gòu)網(wǎng)絡(luò)為頻譜效率的提升和無(wú)線鏈路傳輸性能的改善提供了巨大的潛力。然而,用戶數(shù)量的增多,以及用戶位置與傳輸習(xí)慣的不確定性,使得系統(tǒng)資源管理成為了重要的研究課題。本文針對(duì)異構(gòu)網(wǎng)絡(luò)中的頻譜、能量等資源的分配優(yōu)化問題進(jìn)行了詳細(xì)的分析。首先研究了在單個(gè)主用戶、單個(gè)次級(jí)用戶環(huán)境中感知時(shí)間對(duì)系統(tǒng)吞吐量的影響,通過(guò)推導(dǎo)和仿真驗(yàn)證了存在唯一的最佳感知時(shí)間能使次級(jí)用戶的吞吐量最大,并以此結(jié)論為基礎(chǔ),研究了一種適用于多用戶環(huán)境分時(shí)隙的感知時(shí)間與功率分配聯(lián)合優(yōu)化算法,能夠在控制干擾和能量消耗的同時(shí)優(yōu)化系統(tǒng)的吞吐量。除了感知時(shí)間以外,本文還從異構(gòu)網(wǎng)絡(luò)頻率資源分配優(yōu)化角度出發(fā),分析了封閉式和開放式兩種模式對(duì)系統(tǒng)性能的影響,并在此基礎(chǔ)上研究了一種多用戶環(huán)境下頻率與功率聯(lián)合分配算法,能夠在保證主用戶和次級(jí)用戶服務(wù)質(zhì)量的同時(shí)最大化接入用戶的數(shù)量。
[Abstract]:With increasing demands on quality of wireless communication services continue to improve, wireless data traffic showing explosive growth. In the communication system and energy spectrum is a scarce resource, and the urgent need of more effective management. With the help of new technology of spectrum sensing, offers great potential for improving the macrocell and small cellular network cellular composition the spectral efficiency and improve the performance of wireless link transmission. However, the increase of the number of users, and the location of the user habits and transmission uncertainty, which makes the system resource management has become an important research topic. In this paper the spectrum in heterogeneous network, a detailed analysis of the distribution optimization problem of energy resources such as the first. Study in a single primary user, affect the perceived time of single secondary user environment on the throughput of the system, through the analysis and simulation to verify the existence of optimal perception only Time can maximize the throughput of the secondary user, and based on this conclusion, the joint optimization algorithm of sensing time and power allocation is studied for a multi user environment slot, to control interference and energy consumption and optimize the throughput of the system. In addition to perceived outside of time, the heterogeneous network frequency resource allocation optimization point of view, analyzes the influence of closed and open two modes on the performance of the system, and on the basis of a combination of frequency and power allocation algorithm in multi user environment, can guarantee the primary users and secondary users service quality while maximizing the number of access users.

【學(xué)位授予單位】：南京郵電大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TN92

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本文編號(hào)：1372349