軟體定義無線電設計實例研究

The Research on the Implementation of Software Defined Radio (SDR) Using Universal Software Radio Peripheral (USRP)

洪丞韡(Cheng-Wei-Hung)

指導教授 ： 林偉誠

義守大學/電機資訊學院/電機工程學系/碩士(2016年)

摘要

個人行動通訊的興起，帶動無線通訊的快速發展，因此有限的通訊頻譜成為重要不可浪費的資源。為了防止頻譜的閒置浪費，可偵測頻譜使用情形的感知無線電(Cognitive Radio, CR)技術，近年來已成為熱門的研究課題。感知無線電是植基於軟體定義無線電(Software Defined Radio, SDR)而實現，SDR採用軟體設計方式增加通訊裝置可程式性，使其可運作在不同頻段以及調變方法，從事現代無線通訊系統設計。本論文採用美商國家儀器公司NI USRP-292x通用軟體無線電週邊平台重新建置六個SDR設計實例，提供step-by-step操作流程，進行原理剖析及其效能探討。
SDR設計實例涵括可進行調頻廣播(Frequency Modulation Broadcast)收音之FM調頻收音機、可偵測無線遙控器訊號進行簡報軟體換頁控制之無線簡報控制器、利用單一Walkie-Talkie進行錄音與原音播放之對講機原音回放、模擬智慧型手機簡訊傳輸功能之文字訊息收發器、結合Webcam進行遠端影像擷取與即時無線傳輸之遠距影像監控以及整合Alamouti時空區塊編碼(Space-Time Block Coding)、4QAM調變與最大比例合成(Maximal Ratio Combining，MRC)之22多重輸入/多重輸出(MIMO)通訊系統。

關鍵字

感知無線電 ； 軟體定義無線電 ； 通用軟體無線電週邊 ； 多重輸入/多重輸出通訊系統

並列摘要

The need for mobility and wireless connectivity has driven the widespread deployment of many wireless networks either in local areas (WiFi) or in metropolitan areas (WiMAX, 3.5G, etc.). Cognitive Radio (CR) technology, which is implemented by the concept of software defined radio (SDR), has become a key focus of research in recently years due to the capability of the reuse of the available spectrum resources. In this thesis, the comprehensive details of six CR design instances are descried and implemented by the NI USRP-292x SDR platform, the universal software radio peripheral of National Instruments Corporation. The six instances are FM Transmission with niUSRP, Forward Powerpoint Slides with Your Car Keyfob, RF Record and Playback with USRP and LabVIEW Communications, Packet-based Digital Link, Wireless Video Link and 2x2 MIMO QAM with Alamouti Coding, respectively.

並列關鍵字

Cognitive Radio (CR) ； Software Defined Radio (SDR) ； Universal Software Radio Peripheral (USRP) ； Multiple-Input-Multiple-Output (MIMO) Communication System

參考文獻

[3] Yu-Ting Zeng,” The spectrum trading based on QoS selection mechanism in

cognitive radio networks”,June.2014.

[1] Yu-Xin Liu,” Simulation and optimization of MIMO-OFDM system on DSP-BASED SDR platform”,Jan.2011.

[2] Ci-Sin Jhang,” Performance Analysis and CODE Optimization of WiMAX system based on SDR Platform”,July.2009.

[3] Yu-Ting Zeng,” The spectrum trading based on QoS selection mechanism in cognitive radio networks”,June.2014.