本文選題：DMR　切入點：4CPFSK　出處：《電子科技大學(xué)》2014年碩士論文

【摘要】：DMR是由歐洲電信標(biāo)準(zhǔn)協(xié)會(ESTI)專門為移動無線通訊用戶制定的數(shù)字無線通訊標(biāo)準(zhǔn),并于2005年獲得正式批準(zhǔn)。它支持語音通訊、數(shù)據(jù)傳輸和其他補充服務(wù)。DMR標(biāo)準(zhǔn)能夠提高頻譜利用率,增大通訊容量,節(jié)約使用成本,讓用戶得到更加清晰可靠和便捷高效的無線通信服務(wù)。國外對DMR標(biāo)準(zhǔn)的研究已經(jīng)趨于成熟,國內(nèi)由于引進(jìn)標(biāo)準(zhǔn)較晚,近幾年才開始研究,并且大部分研究都是基于DSP平臺實現(xiàn),不利于后續(xù)功能擴展和升級。因此,論文在DMR集群通信標(biāo)準(zhǔn)下,研究DMR信號基帶處理關(guān)鍵技術(shù),并在具有可擴展性的軟件無線電平臺上進(jìn)行實現(xiàn)。第一,設(shè)計了DMR信號基帶仿真鏈路。DMR采用4CPFSK調(diào)制方式,并且屬于突發(fā)通信系統(tǒng),綜合考慮系統(tǒng)通信性能和實現(xiàn)時的復(fù)雜度,設(shè)計了DMR基帶仿真鏈路。仿真結(jié)果表明在012dBbE N=的信噪比條件下,誤比特率能夠降低到10-3,完全滿足DMR語音通信需求。第二,給出了DMR信號基帶總體設(shè)計方案。對DMR發(fā)射機和接收機的數(shù)字信號處理模塊進(jìn)行設(shè)計和劃分,在FPGA上實現(xiàn)基帶信號處理算法,并進(jìn)行功能仿真,確保DMR信號基帶鏈路功能正確。第三,測試了DMR信號基帶鏈路的功能和性能。在軟件無線電平臺上進(jìn)行驗證,通過FPGA在線調(diào)試工具Chipscope對信號處理模塊進(jìn)行測試和結(jié)果分析,表明模塊功能正確。在直通模式下進(jìn)行點對點通信,通過在測試信號中加入噪聲模擬實際通信環(huán)境下進(jìn)行測試,當(dāng)b0E N在14dB時,誤比特率可以達(dá)到DMR語音通信10-3量級的要求,達(dá)到了項目預(yù)期目標(biāo)。論文中研究的內(nèi)容對DMR基帶信號處理提供了一種實現(xiàn)方案,可以為DMR數(shù)字對講機的研發(fā)提供參考,具有預(yù)研價值。
[Abstract]:DMR, a digital wireless communication standard developed by the European Telecommunications Standards Association (DMR) for mobile wireless users, was officially approved in 2005. It supports voice communications. The data transmission and other supplementary services. DMR standard can improve spectrum efficiency, increase communication capacity and save cost. The research on DMR standards in foreign countries has become more mature. Due to the late introduction of standards in China, the research began in recent years, and most of the research is based on the DSP platform, and most of the research is based on the DSP platform, and most of the research is based on the DSP platform. Therefore, this paper studies the key technology of DMR signal baseband processing under the DMR trunking communication standard, and implements it on the extensible software radio platform. The baseband simulation link of DMR signal. DMR adopts 4CPFSK modulation mode and belongs to burst communication system. The communication performance and complexity of the system are considered synthetically. The DMR baseband simulation link is designed. The simulation results show that the bit error rate can be reduced to 10 ~ (-3) under the SNR of 012dBbE N =, which fully meets the needs of DMR speech communication. The overall design scheme of DMR signal baseband is given. The digital signal processing module of DMR transmitter and receiver is designed and partitioned, the baseband signal processing algorithm is implemented on FPGA, and the function simulation is carried out. To ensure that the DMR signal baseband link function is correct. Thirdly, the function and performance of the DMR signal baseband link are tested. It is verified on the software radio platform, and the signal processing module is tested and analyzed by the FPGA on-line debugging tool Chipscope. It shows that the function of the module is correct. The point-to-point communication is carried out in through mode. By adding noise to the test signal to simulate the actual communication environment, when B0E N is in 14dB, the bit error rate can reach the requirement of 10-3 order of magnitude for DMR voice communication. The research in this paper provides a scheme for DMR baseband signal processing, which can be used as a reference for the research and development of DMR digital interphone, and has the value of pre-research.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TN791;TN92

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1 馮波;DMR信號基帶關(guān)鍵技術(shù)研究與FPGA設(shè)計實現(xiàn)[D];電子科技大學(xué);2014年

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本文編號：1657021