本文選題：功率和速率控制 + 信噪比��； 參考：《北方工業(yè)大學(xué)》2017年碩士論文

【摘要】：無線通信網(wǎng)絡(luò)的功率和速率控制是通信領(lǐng)域和控制領(lǐng)域目前研究的一個前沿?zé)狳c問題,具有較大的理論價值與實際意義。而傳輸時滯和信道衰落是功率和速率控制中需要解決的兩個主要問題。然而到目前為止,幾乎所有的功率和速率控制方法都假設(shè)傳輸時滯是已知的和固定不變的,信道衰落用線性系統(tǒng)加高斯白噪聲描述。事實上,實際網(wǎng)絡(luò)中的傳輸時滯是未知的和時變的,而信道衰落是非線性的。本文在國家自然科學(xué)基金和北京市自然科學(xué)基金項目的資助下,對無線通信網(wǎng)絡(luò)的功率和速率控制進行了較為深入的研究,主要工作與創(chuàng)新點如下:1、建立了一種新的基于信噪比的考慮時變時滯和非線性信道衰落的無線通信網(wǎng)絡(luò)功率和速率控制的系統(tǒng)模型。2、針對上述模型,提出了魯棒功率和速率控制方法,該方法充分考慮了由于未建模動態(tài)和外部干擾引起的不確定性,基于線性矩陣不等式設(shè)計了魯棒功率和速率控制器,并應(yīng)用Lyapunov-Krasovskii函數(shù)對閉環(huán)系統(tǒng)的穩(wěn)定性進行了分析。3、上述魯棒控制方法并沒有考慮發(fā)射功率受限的情況,而實際的無線通訊網(wǎng)絡(luò)中的發(fā)射功率往往是受限的,為此,提出了輸入功率受限情況下的模型預(yù)測功率和速率控制方法,并應(yīng)用Lyapunov-Krasovskii函數(shù)和線性矩陣不等式對閉環(huán)系統(tǒng)的穩(wěn)定性進行了分析。無線通訊網(wǎng)絡(luò)功率和速率控制的目的是盡可能地以最低的發(fā)射功率獲得最大的傳輸速率,以使網(wǎng)絡(luò)的容量和吞吐量達到最大化。本文的研究對充分利用網(wǎng)絡(luò)資源并降低能耗提供理論依據(jù)及技術(shù)支撐,為飛速發(fā)展的無線通信技術(shù)提供一條新的研究途徑。
[Abstract]:Power and rate control in wireless communication networks is a hot topic in the field of communication and control, which is of great theoretical value and practical significance. Transmission delay and channel fading are two main problems in power and rate control. However, up to now, almost all power and rate control methods assume that transmission delays are known and fixed, and channel fading is described by linear system Gabor noise. In fact, the transmission delay in the real network is unknown and time-varying, while the channel fading is nonlinear. Supported by the National Natural Science Foundation of China and the Natural Science Foundation of Beijing, this paper makes a deep research on the power and rate control of wireless communication network. The main work and innovations are as follows: 1. A new system model of power and rate control for wireless communication network based on SNR is established, which considers time-varying delay and nonlinear channel fading. Robust power and rate control methods are proposed. The robust power and rate controllers are designed based on linear matrix inequalities (LMIs), taking into account the uncertainties caused by unmodeled dynamics and external disturbances. The stability of the closed-loop system is analyzed by using Lyapunov-Krasovskii function. The robust control method mentioned above does not consider the transmission power limitation, but the transmission power in the actual wireless communication network is often limited. A model predictive power and rate control method with input power constraints is proposed, and the stability of the closed-loop system is analyzed by using Lyapunov-Krasovskii function and linear matrix inequality (LMI). The purpose of power and rate control in wireless communication networks is to obtain the maximum transmission rate with the lowest transmission power, so as to maximize the capacity and throughput of the network. The research in this paper provides a theoretical basis and technical support for making full use of network resources and reducing energy consumption, and provides a new research approach for the rapid development of wireless communication technology.
【學(xué)位授予單位】：北方工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN92

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本文編號：1800598