本文選題：SWIPT + 無線攜能通信��； 參考：《哈爾濱工業(yè)大學(xué)》2016年碩士論文

【摘要】：當(dāng)今時代,無線通信業(yè)務(wù)增長極為迅速,網(wǎng)絡(luò)大規(guī)模化,通信設(shè)備多樣化。如傳感器網(wǎng)絡(luò)(Wireless Sensor Network,WSN)等許多能量受限網(wǎng)絡(luò),雖然耗電量低,但因其網(wǎng)絡(luò)規(guī)模大,仍然存在布線困難、可持續(xù)性差等問題。射頻信號同時攜帶信息與能量,無線攜能通信(Simultaneous Wireless Information and Power Transfer,SWIPT)技術(shù)可以利用信號中攜帶的能量以及周圍空間中的射頻信號能量為接收機進行充電,接收機能夠同時實現(xiàn)信息傳輸與能量收集兩種功能。但對于同一接收機來說,由于接收信號能量受限,能量與信息速率是兩種矛盾的需求,不能同時得到滿足,本文研究接收機算法,期望通過合理的資源分配實現(xiàn)能量與速率的折中。首先,本文針對SWIPT系統(tǒng)接收機在能量和信息速率方面需求的矛盾,提出了一種基于時隙分配的接收機算法,用于將接收信號按照既定法則分配給能量接收機與信息接收機,該算法能夠達到提高速率與能量折中效果的目的,即信息接收機速率相同時,使能量接收機獲得更多的能量,反之亦然。本文著重對2×1 MISO系統(tǒng)下的算法進行了理論分析,并進行了仿真。仿真結(jié)果表明,相較于傳統(tǒng)的動態(tài)能量分配算法,接收機使用本文設(shè)計的算法可以獲得更好的折中效果,性能更好,這種優(yōu)勢在信道條件較差時表現(xiàn)更加明顯。其次,本文所述接收機算法的核心是根據(jù)實際需求及客觀條件獲得合理的門限,因此,針對不同環(huán)境下最佳門限獲取問題,本文提出了一種最佳門限自適應(yīng)生成策略,用于應(yīng)對接收機在速率、能量方面的不同需求,以及不同的信道條件等情況下自適應(yīng)產(chǎn)生最佳門限。該策略根據(jù)客觀因素調(diào)整迭代終止條件,最終獲得最佳門限,進一步提高該接收機算法對于不同環(huán)境的適應(yīng)能力和可移植性。通過仿真,證明了該策略產(chǎn)生門限的最佳性,并對不同需求、不同信道條件下的最佳門限進行了分析。本文研究了基于時隙分配的SWIPT接收機算法,通過接收機合理的資源分配實現(xiàn)了接收機信息速率與收集能量的折中,較早的嘗試在SWIPT相關(guān)技術(shù)方面展開創(chuàng)新性研究。
[Abstract]:Nowadays, wireless communication service grows rapidly, the network becomes large scale and the communication equipment is diversified. Many energy-constrained networks, such as sensor networks, such as Wireless Sensor Network (WSNs), have low power consumption, but because of their large network size, there are still some problems such as difficult wiring and poor sustainability. Radio frequency signals carry information and energy at the same time. Wireless portable Wireless Information and Power transfer technology can charge the receiver with the energy carried in the signal and the energy of the radio frequency signal in the surrounding space. The receiver can realize both information transmission and energy collection simultaneously. However, for the same receiver, because of the limited energy of the received signal, the energy and the information rate are two kinds of contradictory requirements, which can not be satisfied at the same time. In this paper, the algorithm of the receiver is studied. It is expected to achieve a compromise between energy and rate through rational resource allocation. First of all, in view of the contradiction between energy and information rate of SWIPT system receiver, a time slot allocation based receiver algorithm is proposed to distribute the received signal to the energy receiver and the information receiver according to the established rules. This algorithm can improve the efficiency of rate and energy compromise, that is, when the rate of information receiver is the same, the energy receiver can get more energy, and vice versa. This paper focuses on the theoretical analysis and simulation of the algorithm in 2 脳 1 MISO system. The simulation results show that compared with the traditional dynamic energy allocation algorithm, the proposed algorithm can achieve a better compromise effect and better performance, which is more obvious when the channel conditions are poor. Secondly, the core of the receiver algorithm in this paper is to obtain a reasonable threshold according to the actual requirements and objective conditions. Therefore, aiming at the problem of obtaining the optimal threshold in different environments, this paper proposes an adaptive optimal threshold generation strategy. It is used to adaptively generate optimal threshold for receiver under different speed, energy requirements and different channel conditions. The strategy adjusts the iterative termination conditions according to the objective factors, and finally obtains the optimal threshold, and further improves the adaptability and portability of the receiver algorithm to different environments. The simulation results show that the optimal threshold is generated by the strategy and the optimal threshold is analyzed under different requirements and different channel conditions. In this paper, the algorithm of SWIPT receiver based on time slot allocation is studied, and the compromise between receiver information rate and energy collection is realized through reasonable resource allocation of receiver. The innovative research on SWIPT related technology is carried out earlier.
【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】：2016
【分類號】：TN851
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本文編號：1888052