發(fā)布時間：2018-05-24 16:57

  本文選題：26GHz毫米波 + 信道測量　； 參考：《華北電力大學(xué)(北京)》2017年碩士論文

【摘要】：26GHz波段本地多點分配業(yè)務(wù)(local multipoint distribution service,LMDS)是一種寬帶無線點對多點接入技術(shù),這項技術(shù)在最近幾年得到了飛速的進步與發(fā)展。它有著很多優(yōu)點,如建網(wǎng)成本較低,通信帶寬較高,組網(wǎng)方式靈活等,各大電信運營商也由于這些特性給與這項技術(shù)持續(xù)的關(guān)注。本文圍繞26GHz毫米波的傳播特性,在室內(nèi)信道測量和人體阻擋實驗的基礎(chǔ)上,對信道參數(shù)分布、人體阻擋效應(yīng)以及系統(tǒng)的鏈路性能進行了分析研究,提出了一些有價值的特性,這對于工作在26GHz頻段的無線通信系統(tǒng)的仿真及設(shè)計有重要參考。本文的主要工作有:第一,介紹了26GHz毫米波的無線信道的傳輸特性以及它的三種傳輸機制:反射、散射和繞射,并分析了不同繞射模型(刃形、直角楔形、圓柱體等)對場強預(yù)測的影響,這些對系統(tǒng)的仿真建模具有重要意義。第二,在室內(nèi)26GHz毫米波信道測量實驗的基礎(chǔ)上,研究分析了26GHz毫米波在視距和非視距情況下的傳播參數(shù),主要有:功率延遲分布、均方根時延擴展,傳輸路徑損耗以及陰影衰落等,并進行了信道參數(shù)的總結(jié)。第三,在室內(nèi)26GHz毫米波人體阻擋實驗的基礎(chǔ)上,研究了人體阻擋衰減特性,并基于Vogler多重刃形繞射場計算,提出了適用于多個人體繞射的二射線和四射線場強計算模型,且對模型的精確度進行了考證,對實驗數(shù)據(jù)也進行了分析。最后,對室內(nèi)26GHz毫米波無線信道進行了鏈路預(yù)算,并對無線通信系統(tǒng)的性能作了具體分析。本文對室內(nèi)26GHz毫米波的無線信道傳播特性作了全面的了解和研究,為今后26GHz毫米波的信道建模以及無線通信系統(tǒng)的設(shè)計提供了有用信息。
[Abstract]:26GHz band local multipoint distribution service (LMDS) is a broadband wireless point-to-multipoint access technology, which has been developed rapidly in recent years. It has many advantages, such as low network cost, high communication bandwidth, flexible networking, and so on. On the basis of indoor channel measurement and human barrier experiment, this paper analyzes and studies the distribution of channel parameters, the barrier effect of human body and the link performance of 26GHz millimeter wave, and presents some valuable characteristics. This is an important reference for the simulation and design of wireless communication system working in 26GHz band. The main work of this paper is as follows: first, the transmission characteristics of 26GHz millimeter wave wireless channel and its three transmission mechanisms: reflection, scattering and diffraction are introduced, and different diffraction models (edge, right angle wedge) are analyzed. The influence of cylinder on field strength prediction is of great significance to the simulation modeling of the system. Secondly, on the basis of indoor 26GHz millimeter-wave channel measurement experiment, the propagation parameters of 26GHz millimeter wave under the condition of line-of-sight and non-line-of-sight are studied and analyzed. The main parameters are power delay distribution, root mean square delay spread. The transmission path loss and shadow fading are summarized and the channel parameters are summarized. Thirdly, on the basis of indoor 26GHz millimeter wave human body barrier experiment, the attenuation characteristics of human body are studied, and based on the calculation of Vogler multiple edge diffraction field, a two-ray and four-ray field strength calculation model suitable for multiple human body diffraction is proposed. The accuracy of the model is studied and the experimental data are analyzed. Finally, the link budget of indoor 26GHz millimeter-wave wireless channel is given, and the performance of wireless communication system is analyzed in detail. In this paper, the wireless channel propagation characteristics of indoor 26GHz millimeter wave are studied, which provides useful information for the future channel modeling of 26GHz millimeter wave and the design of wireless communication system.
【學(xué)位授予單位】：華北電力大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TN928

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本文編號：1929848