FU Ce. Algorithm of software digital down converter[J]. Journal of Traffic and Transportation Engineering, 2004, 4(2): 119-122.
Citation: FU Ce. Algorithm of software digital down converter[J]. Journal of Traffic and Transportation Engineering, 2004, 4(2): 119-122.

Algorithm of software digital down converter

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  • Author Bio:

    FU Ce(1977-), male, doctoral student, 86-13130043789, hunter_tina_fu@163.com

  • Received Date: 2003-09-03
  • Publish Date: 2004-06-25
  • The paper put forward a design NCO (numerical controlled oscillator) with phase accumulation algorithm and fraction ratio decimation filter with mixing linear interpolation algorithm and CIC (cascaded integrator comb) filter, so that the DDC (digital down converter) process could be implemented in software on general purpose DSP (digital signal processing) chip and afford greater flexibility. Matlab simulation for a decimation filter whose decimation ratio is 29/31 was made. The results indicate that the algorithm improves the speed of DDC and implements programmable NCO and decimation filter by design software DDC with high performance DSP.

     

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  • [1] 钮心忻. 软件无线电技术与应用[M]. 北京: 北京邮电大学出版社, 2000.
    [2]
    WANG Yu-kun, CHEN Bin. Principle, structure and making of software digital down converter[J]. Radio Engineering, 2000, 30(4): 25-47. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-WXDG200004007.htm
    [3] 成建晖. 未来移动通信的软件无线电实现的研究[D]. 杭州: 浙江大学, 2002.
    [4] 胡广书. 数字信号处理[M]. 北京: 清华大学出版社, 1997.
    [5]
    Kadam S S, Johnson M L. Cordic implementation of digital heterodyne filter in VLSI[J]. Systems and Computers, 2001, 11(1): 529-532.
    [6]
    LI Hong-xiang. Key techniques in programmable digital down converter [J]. Journal of Telemetry, Tracking and Command, 2003, 24(2): 19-22. (in Chinese) https://www.cnki.com.cn/Article/CJFDTOTAL-YCYK200302004.htm
    [7]
    Wang HW, Chan C F, Choy C S. High speed CMOS digital to analog converter with linear interpolator[J]. IEEE Transactions on Consumer Electronics, 2000, 46(11): 1 137-1 142.

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