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C code simulation of DSP fixed-point operations with overflow and saturation

Started by jbrower 1 year ago9 replieslatest reply 1 year ago268 views
All-Does anyone have a link to old Texas Inst C code that simulated what their fixed-point DSPs did with overflow and saturation with arithmetic operations (add,...

Simulating multipath fading channel in Python

Started by roblkc3 1 year ago2 replieslatest reply 1 year ago423 views
Hello!I'm trying to figure out how to simulate a multipath fading channel (I'd like to have both a Rayleigh and a Rician channel, no Doppler to simplify things)...

Design low pass filter and decimation stages, how to?

Started by duemilaventivalvole 1 year ago1 replylatest reply 1 year ago249 views
Hi to all!I usually see 24-bit digitizers giving output sample rate at 50, 100, 200 samples per second, selectable by user.Taking a look to code I can see input...

Quantizing the feedback coefficient in the Goertzel algorithm

Started by gretzteam 1 year ago2 replieslatest reply 1 year ago182 views
The value of the feedback coefficient in the Goertzel algorithm it given by:c = 2*cos( 2*pi*k/N); where k is the bin number and N is the number of points.Here...

Effect of decimation, tuning (mixing) on phase noise

Started by xxn5ac 1 year ago9 replieslatest reply 1 year ago232 views
If I build an analog receiver using a DDS where the DDS is my local oscillator (LO), based on a reference oscillator with phase noise ℒ(n), as I decrease the...

Adding 45 degrees phase shift to a FIR bandpass

Started by wolf22 8 years ago15 replieslatest reply 1 year ago2218 views
Dear sirs, I have a question regarding the calculation of filter taps for a FIR bandpass filter with additional phase shift of approx. 45 degrees. Background: shortwave...

Correlated phase noise

Started by krishk24 1 year ago4 replieslatest reply 1 year ago218 views
I am trying to find a mathematical model to understand the correlated phase noise. In the link https://www.markimicrowave.com/blog/does-a-mixer-add-phase-noise/ ...

Is there any DAC math model around?

Started by kaz 1 year ago18 replieslatest reply 1 year ago261 views
Hi All,I assume Matlab and other math tools do not have a dedicated function to model DAC or ADC.I will try model DAC in digital domain:- generate a clean single...

FFT Interpolation

Started by MrColly 5 years ago26 replieslatest reply 1 year ago1425 views
I am having difficulties accepting the validity of FFT interpolation / time domain zero padding. When a section of time data of length T is selected from which...

Sampling Rate conversion with arbitrary and variable ratios

Started by javiergal 1 year ago14 replieslatest reply 1 year ago672 views
Hi Folks,  I would like to ask you about a non-very common topic... Arbitrary Ratio Sampling Rate conversion... With this, I want to refer to resampling of...

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