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題 名 | 運用整合性軟體無線電開發平臺以實現多輸入多輸出之分碼多重進接無線通訊系統=Integrated Software-Defined-Radio Development Platform for Implementation of a MIMO-CDMA System |
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作 者 | 鄧俊宏; 李伯天; 蕭豐進; | 書刊名 | 新新科技年刊 |
卷 期 | 3 2007.01[民96.01] |
頁 次 | 頁171-181 |
分類號 | 448.8 |
關鍵詞 | 多輸入多輸出之分碼多重進接; 前置碼; 空時編碼; MIMO-CDMA; Preamble; Space-time block coding; |
語 文 | 中文(Chinese) |
中文摘要 | 本文提出一採用MATLAB之整合性軟體無線電(Software Defined Radio, SDR)開發及驗証平臺,並在其上進行一自訂之多輸入多輸出分碼多重進接(MIMO-CDMA)數位調變系統實現,包括無線通訊實體層收發機之演算法設計模擬分析;並示範此一SDR平臺之開發流程,以加速驗證演算法IP之實用性。首先,在實體層規劃上,運用前置碼(Preamble)與展頻碼搭配空時區塊編碼(STBC)技術,設計發射封包格式(Frame Format)與接收處理器,並進行封包偵測、頻率誤差補償、時間估測、通道估測與通道等化等,將可克服多路徑影響與頻率偏移的問題。其次,依照收發機設計架構,運用MATLAB軟體進行電腦模擬,完成MIMO-CDMA收發機演算法之模擬分析,並確認MIMO-CDMA收發機之模擬結果與理論值相符。為進一步驗證演算法IP之實用性,我們採用本SDR平臺中之"硬體設計實現流程",以完成射頻及基頻系統之實現,並藉由實際量測之數據佐證收發機演算法之效能。本文顯示此一開發流程之便捷性,並可用於未來各種新系統之研發與實現。 |
英文摘要 | A MATLAB-based integrated software-defined-radio (SDR) development and verification platform is proposed. In SDR platform, we implement a self-defined MIMO-CDMA digital modulation system. The system involves the algorithm design and simulation of the wireless communication physical layer transceiver. To improve the practicability of algorithm IP, we demonstrate the design flow of SDR platform. The transceiver design involves the following procedures. First, the preamble and spreading code wit space-time block coding technique are constructed to design the transceiver frame format. The packet detection, frequency offset compensation, timing estimation and channel equalization are accomplished by exploiting the preamble training symbols. So that the multipath fading and frequency offset problems can be combated. Second, MATLAB tool is used to simulate and analysis the MIMO-CDMA transceiver algorithm. Simulation results demonstrate the designed transceiver algorithm can approach the performance of uncoded theory. Finally, we setup the SDR platform and propose the "hardware implementation flow" to acquire the measured data to verify the algorithm IP. This paper confirms the convenience of development flow can be used for the future system research and realization. |
本系統中英文摘要資訊取自各篇刊載內容。