USRPN210平臺結(jié)構(gòu)和使用介紹

1、USRP-N210平臺結(jié)構(gòu)和使用介紹平臺結(jié)構(gòu)和使用介紹北京海曼無限信息技術(shù)有限公司北京海曼無限信息技術(shù)有限公司Beijing Highmesh Info. Tech. Corp. Ltd.http:/www.open- 2012年年5月月5日日介紹內(nèi)容介紹內(nèi)容n軟件無線電技術(shù)和軟件無線電技術(shù)和USRPnN210 平臺結(jié)構(gòu)平臺結(jié)構(gòu)nUHD和和GNU Radion編程和開發(fā)指南編程和開發(fā)指南n應(yīng)用案例（應(yīng)用案例（OpenBTS）2軟件無線電技術(shù)和軟件無線電技術(shù)和USRP4軟件無線電nFrom FCC : “We view software radios as the result of an ev

2、olutionary process from purely hardware-based equipment to fully software-based equipment. In this regard, the process can be roughly described in three stagesn1. Hardware driven radios: Transmit frequencies, modulation type and other radio frequency (RF) parameters are determined by hardware and ca

3、nnot be changed without hardware changes.n2. Digital radios: A digital radio performs part of the signal processing or transmission digitally, but is not programmable in the fieldn3. Software Defined Radios:. All functions, modes and applications can be configured and reconfigured by software.nDefin

4、ition From SDR Forum:nSW defines all waveform properties, cryptography and applications, is re-programmable, and may be upgraded in the field with new capabilities5理想的軟件無線電體系結(jié)構(gòu)天線基帶（軟件部分）基帶（軟件部分）ADCDACGPU6軟件無線電的優(yōu)點-功能方面n可配置（Re-configurability）n增強可能的潛在應(yīng)用n能最優(yōu)化網(wǎng)絡(luò)資源n便于演進到新的標準n多功能設(shè)備（Multifunctional devices

5、）n可工作在多種模式（Multi-mode）n可工作在多個頻段（Multi-band）n更短的市場投放時間（Shorter time-to-market）n更快的提供更有針對性得差異化產(chǎn)品n向后的兼容性7軟件無線電的優(yōu)點-性能方面n低硬件成本n硬件設(shè)備可以復(fù)用n使用更多標準的硬件模塊n“靈活”的無線軟件架構(gòu)n應(yīng)用復(fù)用n應(yīng)用可被移植到不通的硬件平臺n應(yīng)用可根據(jù)需要靈活調(diào)整n改善開發(fā)生產(chǎn)效率n標準的APIs, 開放的體系結(jié)構(gòu)n第三方應(yīng)用的即插即用8應(yīng)用-無線電監(jiān)測n對于傳統(tǒng)的無線電監(jiān)測任務(wù)可以有更靈活的解決方案n提供對新的智能認知無線電監(jiān)測的能力。9應(yīng)用-科學研究n認知無線電n新的調(diào)制解調(diào)方法n新

6、的通信協(xié)議10應(yīng)用-業(yè)余無線電臺n可配置/可編程n多頻段/多模式n可聯(lián)網(wǎng)n同時收發(fā)語音、數(shù)據(jù)和視頻11應(yīng)用-電子戰(zhàn)n電子戰(zhàn)的最主要的特點是頻段寬（幾乎復(fù)蓋整個無線頻段），待處理的信號種類多，而且是處有被動接收的條件下工作。n而目前的電子戰(zhàn)系統(tǒng)往往都是已知的，或者在事先假設(shè)的幾種信號樣式下工作，一旦目標信號的特征或信號的通信方式發(fā)生變化，該系統(tǒng)就無能為力了，必須研制開發(fā)新的電子戰(zhàn)系統(tǒng)來適應(yīng)變化，這樣必然貽誤戰(zhàn)機。n所以研究開發(fā)一種工作頻段寬，波形適應(yīng)能力強，可擴展性好，既能適應(yīng)通信信號，又能適應(yīng)雷達信號，還能適應(yīng)導(dǎo)航和敵我識別信號的綜合電子戰(zhàn)系統(tǒng)是現(xiàn)代信息戰(zhàn)的必然要求。軟件無線電正好是解決這一問

7、軟件無線電正好是解決這一問題的最佳途徑題的最佳途徑。12應(yīng)用-雷達/聲納目標電視塔n雷達的種類繁多，每一種雷達用于某一種特殊的用途。不同的雷達其信號叁數(shù)不一樣，使其功能單一，無法適應(yīng)在不同的環(huán)境下對不同屬性的目標進行智能化跟蹤探測的需求。而在軟件無線電基礎(chǔ)上的軟件雷達恰是解決這問題的途徑13軟件定義無線電體系結(jié)構(gòu)頻率振蕩器天線帶通濾波器射頻中頻基帶（軟件部分）基帶（軟件部分）ADCDACFPGADSPCPUGPU14體系結(jié)構(gòu)-總體SoftwareHardware1515User-defined CodeRF Front endTransmitterUser-defined CodeReceiv

8、erDACADCRF Front endFPGAETHETHFPGAUSRP-N210 (mother board)PC體系結(jié)構(gòu)體系結(jié)構(gòu)USRP-N210 (mother board)PCDaughter boardDaughter boardN210平臺結(jié)構(gòu)平臺結(jié)構(gòu)N210基本情況簡介基本情況簡介17 Two 100 MS/s 14-bit analog to digital converters Two 400 MS/s 16-bit digital to analog converters Digital down-converters with programmable decimat

9、ion rates Digital up-converters with programmable interpolation ratesN210基本情況簡介基本情況簡介18 Gigabit Ethernet Interface Capable of processing signals up to 100 MHz wide Capable of streaming signals up to 50 MHz wide Modular architecture supports a wide variety of RF daughter boardsN210基本情況簡介基本情況簡介19 Auxi

10、liary analog and digital I/O support complex radio controls such as RSSI and AGC Fully coherent multi-channel systems (MIMO capable) 1 MB of on-board high-speed SRAM TCXO Frequency Reference2020User-defined CodeRF Front endTransmitterUser-defined CodeReceiverDACADCRF Front endFPGAETHETHFPGAUSRP-N210

11、 (mother board)PC體系結(jié)構(gòu)體系結(jié)構(gòu)USRP-N210 (mother board)PCDaughter boardDaughter board21User-defined CodeRF Front endADCDACETHFPGAnRX2400 2.3-2.9 GHz Transceivern50mW output (17dBm)n0-70dB GainnDirect conversion architecturenTransceiver switch體系結(jié)構(gòu)體系結(jié)構(gòu)-硬件硬件22User-defined CodeRF Front endADCDACETHFPGAnSparta

12、n-3A DSP FPGA XC3D3400AnUHD FPGA Firmware in flash, loaded in power-cyclenDigital down converters (DDC) implemented with cascaded integrator-comb (CIC) filters, decimator and interpolator體系結(jié)構(gòu)體系結(jié)構(gòu)-硬件硬件23體系結(jié)構(gòu)體系結(jié)構(gòu)-硬件硬件射頻子板射頻子板RX FIFOCORDICTX FIFOPC端接口端接口CIC & HBCIC Interp24User-defined CodeRF Front

13、 endADCDACETHFPGAnSpartan-3A DSP FPGA XC3D3400AnUHD FPGA Firmware in flash, loaded in power-cyclenDigital down converters (DDC) implemented with cascaded integrator-comb (CIC) filters, decimator and interpolator體系結(jié)構(gòu)體系結(jié)構(gòu)-硬件硬件2525nConfigure （Sampling Rate，F(xiàn)requency）nBased on UHD APInGR-UHD is availabl

14、e in GNU Radio 3.4.0 or highernGNU Radio CompanionnCode may be Python，C+User-defined CodeRF Front endADCDACETHFPGAPC體系結(jié)構(gòu)體系結(jié)構(gòu)-軟件軟件LED指示指示26A：transmittingB: mimo cable linkC: receivingD: firmware loadedE: reference lockF: CPLD loadedUHD和和GNU RadionSource CodenC+ compilernCMakenBoostnPythonnCheetahnDox

15、ygen （Optional）nDocutils （Optional）See： http:/ http:/ UHD29GNU RadioList of GNU Radio Blocks30nSourcesnConstant sourcenSignal sourcenNoise sourcenNull sourcenVector sourcenRandom sourcenFile sourcenAudio sourcenTCP/UDP sourcenSourcesnGLFSR sourcenWav File sourcenMessage sourcenPad sourcenVirtual sou

16、rce31nSignal SinksnNull sinksnVector sinksnFile sinksnAudio sinknTCP/UDP sinknWav File sinknMessage sinknPad sinknVirtual SinkList of GNU Radio BlocksnOperatorsnAdd ConstnAddnSubtractnMultiply constantnMultipliernDividernLog functionnOrnRMS 32nType ConversionsnComplex to ArgnComplex to RealnComplex

17、to FloatnInt to FloatnChar to FloatnIshort to Complex.List of GNU Radio BlocksnSynchronizersnLevel ControlsnFiltersnModulatorsnError CorrectionnGR-UHDnWX GUI WidgetsnQT GUI Widgets 33GNU Radio結(jié)構(gòu)結(jié)構(gòu)PYTHONSWIGGNU Radio C+ API編程和開發(fā)指南編程和開發(fā)指南35編程開發(fā)方法編程開發(fā)方法 GNU Radio Companion Python C+36GNU Radio Companion注：需在安裝注：需在安裝GNU Radio時成功安裝時成功安裝GR-UHD組件組件37UHD in PythonPYTHONSWIGUHD C+ APInImport m