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Recent content by laocai

  1. L

    chinese language is difficult to learn ,but chinese people

    I think chinese is easy ,english is difficult
  2. L

    ASK,FSK or PSK for less bandwidth, lower error probability, lower circuit complexity

    ask fsk and psk different system ,different choice
  3. L

    Why sampling is done first and then quantization??

    how can you quantization first ? :)
  4. L

    Motion Detection algorithm

    there are a lot of papers about motion detection ,you can use google to find it
  5. L

    SPDIF Transmitter & Receiver Design

    spdif receiver i think you must use CDR to decode
  6. L

    What tool are used for system verilog designing?

    Re: about system verilog modelsim 6.0 support !!
  7. L

    Whats the difference between Verilog and VHDL ?

    Re: verilog and VHDL i think verilog is easy to use
  8. L

    Which software that simulates spice is the fastest ?

    Re: simulation which tools is faster?for the same circuit and the same accuracy
  9. L

    which redhat is good for eda:

    i use 8.0 and feel it good
  10. L

    Are there any famous analog IC design companies in China?

    ballst ic in silan silan 's products are almost low-end product now ,I think Huawei,ZTE,Datang may have more ability in Asic design
  11. L

    do you want to find friend working together in china?

    I agree with " piao " ,Ic design company in chinese mainland are almost starters,maybe they will grow fast!
  12. L

    Noise shaping filter - any suggestions?

    Re: Noise shaping filter I think Nosie shaping filter is good , you can simulate one using matlab and get some points
  13. L

    how to do a digma delta digital modulator in DAC?

    there are lot of doucument about sigma and delta modulate on internet ,you can use "google" search
  14. L

    What is a Median Filter ?

    it's a simple nolinear filter ,sometimes use for graph processing
  15. L

    down-sampler & up-sampler

    of cource it's linear system in theory ,but sampling is time-variant ,so the up/down sampler is linear time variant system Added after 1 minutes: of cource it's linear system in theory ,but sampling is time-variant ,so the up/down sampler is linear time variant system
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