Forums Update, Tips and Tricks - Please Read!

Started by stephaneb 5 months ago4 replieslatest reply 3 months ago282 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...

Need to understand: How noise is folded into BW of interest after LP filtering+decimatiom

Started by niptoz 8 hours ago10 replieslatest reply 2 hours ago38 views
Hello out there. I'm pretty new at DSP, but here comes a formulation of my problemCan anyone explain how i would be able to figure out the SNR after performing...

Complex envelope and analytic signals.

Started by Lucky_12 7 hours ago5 replieslatest reply 2 hours ago44 views
I can't get my head around the complex envelope and analytic signals. I know I have asked this before, but I considered the problem again and to me it hasn't been...

code rate vs rate matching in FEC/Channel coding

Started by Sharan123 1 day ago5 replieslatest reply 18 hours ago36 views
I am getting a little confused between rate matching vs code rate as applied at FEC/Channel coding.How and when what code rate and rate matching is applied?Are these...

OFDM Burst Preamble.

Started by SenSen 1 day ago3 replieslatest reply 22 hours ago38 views
Hi.While analyzing an OFDM signal sampled at 40Mhz, with the following Spectrum:fskorofdm1.png...

Frequency resolution

Started by sorh 2 days ago11 replieslatest reply 1 day ago100 views
Hi guys, thanks for this website, its very useful and interestingI'm a student and still struggling to understand many of this complexities about frequency resolution...

PDM asynchronous sample rate conversion

Started by andrewstanfordjason 5 days ago9 replieslatest reply 2 days ago70 views
Hello, I am looking to sync a 3072000Hz-ish PDM signal(clock) to an external 16kHz-ish PCM signal(clock). The PDM clock is running slightly faster then the PCM...

Matlab Optimization Toolbox-Constrained Optimization problem

Started by zarith 4 days ago5 replieslatest reply 4 days ago40 views
Hi, I have a problem on solving a constrained optimization problem which has 5 variables and 3 constraints. my code for the objective function is: function y = objective_function(x) y...

If H(ejw) is an ideal LPF, what is H(-ejw) ?

Started by htennek2k 5 days ago2 replieslatest reply 5 days ago89 views
Hello all.Just this simple question:Let's say that H(ejw) is the frequency response of an ideal LPF, then my question is what is H(-ejw) ?? My guess, is that since...

Carrier Frequency Offset Estimation under AWGN

Started by Billy_Tsekenis 1 week ago3 replieslatest reply 5 days ago87 views
Hello everyone :) I am trying to make a mimo-ofdm transmitting system with usrp's for my bachelor thesis. The system is almost complete at the simulations in matlab...

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