綠色無線通信系統(tǒng)中的資源分配算法研究
[Abstract]:The main research goal of wireless communication system is from 2G (2nd Generation) coverage priority to 3G capacity priority to 4G phase and future energy efficiency (Energy Efficiency,EE) priority. Green Communication (Green Radio Communication), which aims to save energy and reduce emissions, is becoming the development trend of wireless mobile communication system in the future. The resource allocation technology in green wireless communication system can meet the requirement of spectrum efficiency (Spectral Efficiency,SE), and even introduce new renewable energy through subcarrier scheduling, power allocation and even new renewable energy. The energy efficiency EE, of communication system is optimized and the fairness of resource allocation among users is improved. In this paper, the energy efficiency and optimization algorithms of three wireless communication systems are studied and simulated. Firstly, this paper introduces the (Frequency Division Multiplexing,FDM system, summarizes the current research situation in the field of green wireless communication, the research direction and the research results of the existing resource allocation algorithms, thus leads to the research content of this paper. Finally, the logical structure of the thesis is introduced. In chapter 2, the resource allocation algorithm in orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access,OFDMA) multiuser systems is studied. Firstly, several traditional resource allocation algorithms are simply analyzed. Then a resource allocation algorithm based on proportional fairness of energy efficiency is proposed to solve the problem of energy efficiency fairness. Under the premise of guaranteeing the data rate of user transmission, the algorithm can meet the requirements of fairness of energy efficiency ratio among users to the maximum extent, and improve the overall energy efficiency performance of the system by means of the optimal transmission power closed solution. In chapter 3, the resource allocation algorithm of single carrier frequency division multiple access (Single Carrier Frequency Division Multiple Access,SC-FDMA) is studied. According to the single carrier characteristics of SC-FDMA system, the subcarriers are clustered. Firstly, the energy efficiency fairness and system energy efficiency of users with the same number of subcarriers and different allocation methods are discussed. At the same time, the influence of equivalent channel indexes, such as SNR (Channel gain to Noise Ratio,CNR, on system performance is compared. In order to solve the problem of low energy efficiency in continuous subcarrier uniform clustering algorithm, a continuous subcarrier nonuniform clustering algorithm based on optimal energy efficiency is proposed. According to the user channel quality, the algorithm dynamically configures the size of the continuous subcarrier clusters occupied by each user, and improves the overall energy efficiency of the system under the guarantee of the user data transmission rate. In chapter 4, the resource allocation algorithm of wireless communication system based on renewable energy is studied. Firstly, the wireless transmission system model of renewable energy and the resource allocation algorithm based on transmission time minimization are introduced, and the system energy efficiency performance of the optimization algorithm is analyzed and verified by simulation. Then, this paper introduces the resource allocation problem of renewable energy under the aid of traditional energy, and puts forward a high energy efficiency dual-energy mixed use algorithm, which can not meet the transmission requirements of renewable energy. Use traditional energy to aid transmission, at the same time make full use of renewable energy. Finally, the paper summarizes the full text and points out the future research work and direction.
【學位授予單位】:電子科技大學
【學位級別】:碩士
【學位授予年份】:2014
【分類號】:TN929.5
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