於WiMAX系統中使用多輸入多輸出天線在不同衰弱通道上之效能分析與研究

ON THE PERFORMANCE ANALYSIS AND STUDY OF MIMO-WiMAX UNDER DIFFERENT FADING CHANNELS

吳秉澤(Ping-Tse Wu)

指導教授 ： 許超雲

大同大學/電機資訊學院/通訊工程研究所/碩士(2012年)

摘要

近年來無線通訊技術展開了革命性地變化與進展，無線通訊有著涵蓋範圍廣、傳輸距離長與免於人力佈線等諸多優點，但其仍無法像有線通訊一樣有著高傳輸率與可靠的通訊品質，由於在無線通訊傳輸技術中，訊號的傳遞會因為收發兩端之間的距離、環境或是移動速度等因素之影響，造成多重路徑與都普勒效應等干擾，使得通訊品質大打折扣，這是至今發展無線通訊技術上必須克服的問題。
本論文主要以MIMO技術於IEEE802.16e(Mobile WiMAX)的標準規範為研究重心，嘗試在大同大學與阿爾卡特-朗訊(Alcatel-lucent；ALU)合作建置的WiMAX校園實驗網路中，搭配多通道模擬器(EB Propsim C8)建立出近似於實際環境的SUI(Stanford University Interim)通道模型，實現多輸入多輸出天線在不同衰弱通道上效能的分析，並且去驗證ALU系統之效能，同時提出系統更有效的調變技術切換機制。
效能的實現上會使用Ixload，由Ixload產生FTP封包，並依照MS端所量測到下載的資料吞吐量(Throughput)與FER(Frame Error Rate)來評估效能的不同。

關鍵字

多輸入多輸出 ； IEEE 802.16e ； SUI

並列摘要

In recently years, the wireless communication technology has launched revolutionary the change and the progress, the wireless communication has advantage of covering a wide range, long distance transmission and freedom from human wiring, but it still doesn't similar to wired communications with high transmission data rate and reliable communication quality, the transmission of the signal because of the impact of the distance between the transceivers, the environment , mobile speed and other factors, resulting in interference of the multipath and doppler effects, this is a question which in the development of wireless communication technology must overcome.
In this thesis is mainly based on MIMO technology in IEEE802.16e (Mobile WiMAX) standard specification for the study of gravity, try in the WiMAX network of campus experiments built by Tatung University and Alcatel - Lucent (Alcatel-lucent; ALU) cooperation, with the Multi-channel Emulator (EB Propsim C8) to build up SUI(Stanford University Interim) channel models, realizes the MIMO antenna and analysis of the performance under different fading channels, to verify the performance of the ALU system, and propose effective switching mechanism of modulation technique.
The realization of the performance and produce the FTP packets by Ixload,
According to the measuring of the amount of download Throughput and FER (Frame Error Rate) by MS side to assess the performance.

並列關鍵字

MIMO ； IEEE 802.16e ； SUI

參考文獻

[1]Jeffrey G. Andrews, Arunabha Ghosh, and Rias Muhamed, Fundamentals of WiMAX: Understanding Broadband Wireless Networking, Prentice Hall, 2007.

[2]Omar Arafat and K. Dimyati ,“Performance Parameter of Mobile WiMAX :A Study on the Physical Layer of Mobile WiMAX under Different Communication Channels & Modulation Technique,’’ in Computer Engineering and Applications (ICCEA), 2010 Second International Conference on, 2010, pp. 533-537.

[4]IEEE Std 802.16-2004, “IEEE Standard for Local and Metropolitan Area Net-works -Part 16: Air Interface for Fixed Broadband Wireless Access Systems,”Oct. 2004.

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