基于ZYNQ-7000和AD9361的软件无线电平台设计

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Design of software-defined radio platform based on ZYNQ-7ooo and AD9361

ZHUWenrui，ZHOUHua，DONGYu ScholofEleicdoatiEiiUesittioloj

Abstract：Duetothelimitationsof thetraditionalradioplatforms，suchaslackofflexibility，non-customizabilityandpoor interference resistance，aradio frequency transceiver system based on the maincontrol chip ZYNQ-70O seriesand RFchip AD9361isdesignedandvalidated.Inthissystem，azero-IF（intermediatefrequency）architecture，supportinganoperating frequency range of 7O MHz to6 GHz and a channel bandwidth range of 200kHz to 56MHz ， is employed. This system is suitableforvariousaplicationscenarios.Inthedesignunit，thesectionofprogrammablelogic（PL）ontheFPGAisresponsible forgeneratingthebasebandsigalandconvertingthedataprotocolAD9361.Inthesectionofbus，AXI_Stream isutliedto facilitatebulk datastoragefromthePLsideintotheDDR（doubledatarate）ofthePS（processing system）side.Inthe verificationunit，aspectrumanalyzerwasusedtoexaminethefrequencyoftheRFoutputsignal，andtheresultsconfiredits compliancewiththeprincipleoffrequency mixing.Additionally，bymeasuringthedatatransferratefrom thePLsidetothePS side，anadaptiveDMAtransferrateadjustment mechanismwasproposed.Thismechanismdynamicalladjusts thetransferrate basedonthevolumeofthedatatransferedinasingleoperation.Theresultsindicatethatthedata transferrateisdirectly proportional tothedatatransmisionvolume，maintainingarateofapproximately312.5Mb/s，whichmeetsthesystem performance requirements.

Keywords：software-defined radio; ZYNQ-7Oo0; AD9361; RF channel; communication frequency point; AXI bus

0 引言

第五代（5G）蜂窝网络[自2020年初问世以来，其应用范围广泛，涵盖了众多新技术，如大规模MIMO2毫米波通信、高频段传输4和高数据速率等。（剩余8507字）