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Forums Update, Tips and Tricks - Please Read!

Started by stephaneb 7 years ago14 replieslatest reply 4 months ago2706 views
It's been a few months since the launch of the new forums.  Here are a few thoughts. The thumbsup and beer buttons    If there is one thing that could have a...

Error in frequency estimation for low frequencies

Started by ueligiger 1 day ago16 replieslatest reply 2 hours ago130 views
Hello everyoneWe want to use a chirp z-transform to determine the frequency of a signal more accurately. It works quite well, but we see that the accuracy is much...

Why is it said to be alias free in such a multirate system?

Started by hu2024 1 day ago3 replieslatest reply 17 hours ago107 views
Page 246 in multirate systems and filter banks by P. P. Vaidyanathanm.https://ibb.co/LrBWpfDThe sampling in the first stage should have brought the aliases already,...

Farrow Filter

Started by Shaiko 2 weeks ago18 replieslatest reply 2 days ago231 views
Hello,As far as I understand the purpuse of a Farrow filter is to interpolate samples at a fractional ratio.For example: we have an ADC sampling at 41 MS/S and we...

Occam's razor, Physics example

Started by Cedron 4 days ago2 replieslatest reply 4 days ago160 views
From the Wikipedia article:"Suppose an event has two possible explanations. The explanation that requires the fewest assumptions is usually correct....However, Occam's...

IIR filters with FSK signals

Started by alx8kv 1 month ago10 replieslatest reply 6 days ago152 views
Hello, everyone!I wonder, is it incorrect to use IIR filters for NRZ FSK signals? As I understand, IIR filter comes with a frequency-dependent delay and introduces...

Good site for distance Learning

Started by dcomer 1 year ago3 replieslatest reply 1 week ago266 views
Many, like myself, are constantly refreshing their grey matter, after long and distinguished (well long to be sure) careers. The only positive outcome of the COVID-19...

CIC bus width

Started by duemilaventivalvole 4 weeks ago3 replieslatest reply 2 weeks ago139 views
Hi guys, I took a look to"A beginner's guide to Cascaded Integrator-Comb (CIC) filters"and I am confused about registers width:register bit widths = 12+⌈3⋅log2(8)⌉=12+3⋅3=21bits              ...

Acoustic Modems in Matlab

Started by Mannai_Murali 2 weeks ago8 replieslatest reply 2 weeks ago141 views
I want to try Acoutic Modems in Matlab and working with actual speaker and mike for transmission.I have designed 8 psk modem and another OFDM version QPSK Modem.Is...

CIC implement question?

Started by HerbertLu 1 year ago11 replieslatest reply 1 month ago282 views
Hi Sir,I want to use sigma-delta modulator and FPGA to implement digital power control, and I am studying the Understanding Digital Signal Processing CH13.24, and...

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