本文選題：寬帶無線信道仿真　切入點(diǎn)：MIMO　出處：《北京交通大學(xué)》2014年碩士論文

【摘要】：摘要：隨著當(dāng)前移動通信系統(tǒng)寬帶化以及大規(guī)模MIMO通信技術(shù)成為下一代移動通信系統(tǒng)研究的熱點(diǎn),寬帶無線信道仿真技術(shù)需求日益迫切。無線信道仿真是移動通信理論和關(guān)鍵技術(shù)研究、通信系統(tǒng)設(shè)計(jì)、無線網(wǎng)絡(luò)規(guī)劃、設(shè)備研制及工程驗(yàn)收的重要工具,也是無線信道建模研究與應(yīng)用之間的重要橋梁。目前,無線信道仿真主要以純軟件仿真為主,該方法實(shí)時(shí)性較差,仿真環(huán)境過于理想,無法提供與物理設(shè)備的接口；而基于硬件的無線信道仿真技術(shù)被少數(shù)國外公司壟斷,靈活性較差,難以滿足未來無線信道仿真的需求。針對這種情況,本文利用并行計(jì)算技術(shù)對基于硬件的無線信道仿真系統(tǒng)進(jìn)行了優(yōu)化設(shè)計(jì),研制了基于半文件存儲方法的寬帶無線信道仿真儀,并通過了實(shí)驗(yàn)室驗(yàn)證測試。 本文主要工作及創(chuàng)新點(diǎn)包括以下幾個(gè)方面： 一、針對寬帶MIMO信道仿真,采用迭代處理、并行處理、軟硬件聯(lián)合處理等技術(shù),提出了基于半文件存儲的信道仿真方法,有效地降低了仿真復(fù)雜度,提升了仿真速度,滿足了高速環(huán)境下高精度實(shí)時(shí)仿真的需求。 二、基于本文提出的信道仿真方法,在美國國家儀器(NI)公司的軟件無線電平臺上研制了支持兩通道獨(dú)立仿真和2×2MIMO仿真的寬帶無線信道仿真儀,滿足了當(dāng)前LTE系統(tǒng)半實(shí)物仿真的需求。 三、搭建了LTE半實(shí)物仿真系統(tǒng),對TD-LTE系統(tǒng)高速環(huán)境下的鏈路性能進(jìn)行了仿真測試,分析了EVM、BLER以及吞吐量等性能指標(biāo),對研制的無線信道仿真儀的性能進(jìn)行了驗(yàn)證。
[Abstract]:Absrtact: with the current broadband mobile communication system and large-scale MIMO communication technology become the focus of the next generation of mobile communication systems, broadband wireless channel simulation technology needs more and more urgent.Wireless channel simulation is an important tool for mobile communication theory and key technology research, communication system design, wireless network planning, equipment development and engineering acceptance. It is also an important bridge between wireless channel modeling research and application.At present, the wireless channel simulation is mainly based on pure software simulation. The simulation environment is too ideal to provide the interface with physical equipment, and the hardware-based wireless channel simulation technology is monopolized by a few foreign companies.Because of its poor flexibility, it is difficult to meet the needs of future wireless channel simulation.In this paper, the hardware based wireless channel simulation system is optimized by using parallel computing technology. A wideband wireless channel simulator based on half-file storage method is developed and tested in the laboratory.The main work and innovation of this paper include the following aspects:Firstly, for broadband MIMO channel simulation, iterative processing, parallel processing, hardware / software joint processing and other techniques are used to propose a channel simulation method based on half-file storage, which effectively reduces the complexity of simulation and improves the speed of simulation.It meets the demand of high precision real-time simulation in high speed environment.Secondly, based on the channel simulation method proposed in this paper, a wideband wireless channel simulator supporting two-channel independent simulation and 2 脳 2MIMO simulation is developed on the software radio platform of National instrument Company.It meets the demand of the current LTE system hardware-in-the-loop simulation.Thirdly, the LTE hardware-in-the-loop simulation system is built, and the link performance of the TD-LTE system under the high-speed environment is tested. The performance indexes of the EVMM-BLER and the throughput are analyzed, and the performance of the developed wireless channel simulator is verified.
【學(xué)位授予單位】：北京交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN929.5

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相關(guān)期刊論文 前1條

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本文編號：1715502