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Recent content by kaishi

  1. K

    diff b/w soft-decision decoding and hard-decision decoding??

    It is like 10-bit ADC vs. 1-bit ADC, which is better? Hard-decision causes large quantization noise and information loss.
  2. K

    3G or 4G. which is best

    3G failed because of its high cost, the burst of dot com bubble, and greedy patent holders (mainly Qualcomm). 4G is more wide-open?
  3. K

    Help : Sampling Factor in Wimax(Please)

    sampling factor It is said that WiMax (IEEE 802.16) specification is not well written. In OFDM systems, RF BW usually is smaller than FFT BW (Nfft * subcarrier spacing). E.g., 802.11a, RF BW=17.6MHz (-3dBc) while FFT BW is 20 MHz. My understanding is the sampling factor in WiMax FFT BW to...
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