【摘要】：由于毫米波的頻率高、可用帶寬大,能給系統(tǒng)提供每秒千兆比特的傳輸速率,因此被視為5G通信的一項(xiàng)關(guān)鍵技術(shù)。為了保證足夠的鏈路余量,毫米波系統(tǒng)在收發(fā)端需要都采用大規(guī)模天線的定向波束成型技術(shù),由于硬件設(shè)備的高成本和功率損耗,毫米波頻段的MIMO系統(tǒng)被分成模擬域和數(shù)字域兩部分。因此,與微波頻段的MIMO系統(tǒng)相比,多天線技術(shù)要求提出毫米波系統(tǒng)專有的通信算法,在此背景下,本文從系統(tǒng)的混合結(jié)構(gòu)、信道模型、信道估計(jì)和混合合成算法這幾方面對(duì)毫米波通信的MIMO系統(tǒng)進(jìn)行研究。首先,本文給出了毫米波通信的系統(tǒng)結(jié)構(gòu),研究的基于開(kāi)關(guān)切換器的混合結(jié)構(gòu)與基于移相器的混合結(jié)構(gòu)相比,具有更低的復(fù)雜度和功耗,并定義能量模型,用來(lái)評(píng)估兩種結(jié)構(gòu)的功率損耗。其次,本文研究了信道估計(jì)技術(shù),將稀疏多徑的毫米波信道估計(jì)轉(zhuǎn)化為信號(hào)的重建,并采用壓縮感知理論的重構(gòu)算法進(jìn)行毫米波的信道估計(jì),同時(shí)也應(yīng)用了最小二乘法對(duì)毫米波信道進(jìn)行了估計(jì),并對(duì)兩種算法的估計(jì)性能進(jìn)行仿真分析。最后,利用估計(jì)的信道狀態(tài)信息,設(shè)計(jì)了合成算法,并對(duì)每種結(jié)構(gòu)能實(shí)現(xiàn)的頻譜效率和比特率進(jìn)行仿真,綜合分析每種結(jié)構(gòu)的硬件復(fù)雜度、功耗和頻譜效率,基于開(kāi)關(guān)切換器的混合結(jié)構(gòu)能獲得更好的性能。
[Abstract]:Because of the high frequency of millimeter-wave and the large available bandwidth, it can provide the transmission rate of gigabit per second to the system, so it is regarded as a key technology in 5G communication. In order to ensure sufficient link allowance, the millimeter wave system needs to adopt the directional beamforming technology of large scale antenna in the transceiver, because of the high cost and power loss of hardware equipment. The MIMO system of millimeter wave band is divided into analog domain and digital domain. Therefore, compared with the MIMO system in microwave frequency band, the multi-antenna technology requires a special communication algorithm for millimeter-wave system. In this context, the mixed structure of the system, the channel model, The MIMO system for millimeter wave communication is studied in the aspects of channel estimation and hybrid synthesis algorithm. Firstly, the system structure of millimeter-wave communication is given. Compared with the hybrid structure based on phase shifter, the hybrid structure based on switch has lower complexity and power consumption, and the energy model is defined. Used to evaluate the power loss of both structures. Secondly, the channel estimation technique is studied in this paper. The sparse multipath millimeter wave channel estimation is transformed into signal reconstruction, and the reconstruction algorithm based on compression perception theory is used to estimate the millimeter wave channel. At the same time, the least square method is used to estimate the millimeter-wave channel, and the performance of the two algorithms is simulated. Finally, using the estimated channel state information, the synthesis algorithm is designed, and the spectrum efficiency and bit rate of each structure are simulated, and the hardware complexity, power consumption and spectrum efficiency of each structure are analyzed synthetically. The hybrid structure based on switch can achieve better performance.
【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】：2017
【分類號(hào)】：TN928

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相關(guān)期刊論文 前1條

1 楊峰義;張建敏;謝偉良;王敏;王海寧;;5G蜂窩網(wǎng)絡(luò)架構(gòu)分析[J];電信科學(xué);2015年05期

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本文編號(hào)：2298250