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Active noise cancellation(ANC) in headphones
Started by 4 months ago●13 replies●latest reply 4 months ago●239 viewsHello, I am interested I understanding how ANC in headphones works. My high level understanding is that an external mic listens to the noise then a speaker within...
Consider a 64-subcarrier OFDM signal with QPSK modulation and all 64 subcarriers have data. Each of the 64 subcarriers will have the same amplitude (assume 1.0)...
For CIC filter. Is Feedback or Feedforward integrator preferred ?
Started by 4 months ago●1 reply●latest reply 4 months ago●144 viewsI have been designing a CIC filter in python. For reference I had taken the matlab cic function dsp.CICDecimator to check if the filter I am designing is functioning...
Doubt regarding CIC filter implementation.
Started by 4 months ago●5 replies●latest reply 4 months ago●187 viewsI wrote a CIC filter design in Python using the below-given equations. I tried to check the design I have, comparing the output with an ideal Matlab CIC function....
Does beam forming apply to Uplink MIMO ?
Started by 5 months ago●7 replies●latest reply 4 months ago●157 viewsHi,I posted this on some communication forums but without success.There is plenty talk about beam forming (e.g. 4G, 5G ...etc) in the context of downlink (base...
Reducing IIR filter settling time.
Started by 4 months ago●9 replies●latest reply 4 months ago●216 viewsHello,I am not an expert in DSP so please excuse me if my question is dumb.I am trying to design an IIR butterworth filter in python. I am looking at the step response...
Match SVF bandwidth with direct form
Started by 5 months ago●2 replies●latest reply 5 months ago●120 viewsHi,I implemented a 2nd order allpass filter in both the direct form and as a state variable filter. SVF implementation from: https://mural.maynoothuniversity.ie/18520/1/VL_imp... Direct...
Hello, I am trying to write a function for implementing a FIR filter in C. I am implementing fixed point integer arithmetic but have a filter specified in floating...
Good evening everyone!I have a question concerning data transmission via FSK.As far as I know, conventional methods encode symbols via matching a sequence of bits...
OFDM with real-only transmission
Started by 8 months ago●46 replies●latest reply 6 months ago●262 viewsConsider a 64 subcarrier OFDM waveform with 20MHz bandwidth. At the transmitter, we would generate 64 complex numbers (A(n) + jB(n)) n=1, 2, 3, .... 64 using the...
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