Forums Update, Tips and Tricks - Please Read!

Started by stephaneb 4 years ago11 replieslatest reply 2 weeks ago1450 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...

short time subband coding

Started by niloofar_omidi 3 days ago5 replieslatest reply 1 day ago64 views
Hello, I am implementing a subband ADPCM codec, Fs=16 kHz, frame length 3ms, band1=50Hz-2kHz, band2= 2kHz-8kHz. I used the FIR filter for subband coding and %50...


Started by sergs 2 days ago82 views
Our company is going to produce and sell LTE based devices in the US, so we have to pass a PTCRB/OTA testing to being allowed to work with American mobile operators....

Frequency planning in RF sampling ADCs

Started by amitjonak 7 days ago2 replieslatest reply 6 days ago83 views
I am trying to do some implementation on Xilinx ZCU111 RFSoC board. I am basically trying to send an OFDM signal and loop back to the processor and see its spectrum....

How to modulate PSK63 with liquiddsp?

Started by jbaudot 7 days ago64 views
I am trying to implement the BPSK-63 modulator using liuid dsp library.Here is my code:#include <stdio.h> #include <stdlib.h> #include <string.h> #include...

SPI Signal

Started by jasontje32 1 week ago4 replieslatest reply 1 week ago198 views
Hello Friends, I am new to this Forum, so first  of all greetings to all !I have an old Agilent system that has a detector and a DSP board. The signal is transmitted...

Finding "channel" impulse response from input and recorded data

Started by niptoz 2 years ago9 replieslatest reply 2 weeks ago115 views
Hello nice forum! Im facing the problem of estimating the impulse response of the following process: Known signal that is transmitted and recorded by a microphone...

Use cross-correlation for speech detection/verification and time delay measurement

Started by skrowten_hermit 4 weeks ago14 replieslatest reply 2 weeks ago104 views
I have been experimenting with cross-correlation function to verify the presence of speech in a recorded file wrt a source file. I tried the following in Matlab:source...

CFO correction in OFDM

Started by roblkc3 3 weeks ago10 replieslatest reply 2 weeks ago93 views
Hello,I've implemented a burst protocol vaguely inspired to 802.11, with 1024-subcarriers FFTs, short training symbols that use ZC sequences, and minimum length...

Algorithm testing via simulation in Scilab/Xcos

Started by steven01 4 weeks ago11 replieslatest reply 2 weeks ago79 views
Hello,I have been developing a library of control blocks (PID controller, various filters etc.) in C programming language. My goal is to have basic building stones...

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