## Help Please ;how plot a curve from (.tif) images ?

Started by in Matlab DSP10 years ago 1 reply

hello everybody please i need to know how to plot a curve from a series of images with extension (.tif), i'm a new Matlab and i need some...

hello everybody please i need to know how to plot a curve from a series of images with extension (.tif), i'm a new Matlab and i need some examples or tutorial or anything thing lo learn how to do that..

## Getting FIR filter coefficients from transfer function

Started by in Matlab DSP10 years ago 3 replies

Hi all, I'm trying to implement a low pass filter on a microcontroller, getting coefficients in MATLAB. I have the transfer function in...

Hi all, I'm trying to implement a low pass filter on a microcontroller, getting coefficients in MATLAB. I have the transfer function in s-domain, so I am using bilinear() to get the coefficients. This gives num and den (a and b coefficients) for an IIR implementation. I would like to know if it possible to get the coefficients for an FIR implementation of a filter, when you have the transf...

## SUI channel resampling

Started by in Matlab DSP10 years ago 1 reply

Hello, Could anyone let me know how I would resampling the generated SUI channel to obtain a desire sampling rate? Thank you, Quoc ...

Hello, Could anyone let me know how I would resampling the generated SUI channel to obtain a desire sampling rate? Thank you, Quoc

## How to calculate the bandwidth for the Analog/Digital Modulations?

Started by in Matlab DSP10 years ago

Hi, I have a few doubts regarding the calculation of bandwidth for various Analog/Digital modulation, please correct me if I have gone...

Hi, I have a few doubts regarding the calculation of bandwidth for various Analog/Digital modulation, please correct me if I have gone wrong Fm=Frequency of message signal. deltaF=Freq.deviation SR= Symbol Rate AM = 2 * Fm FM = 2 * deltaF + Fm 2FSK = 2 * deltaF + SR 4FSK = 2 * deltaF + SR BPSK = SR QPSK = SR Will the Root Cosine Filter at the transmitter side will effect t...

## Re: problem in 8psk demodulation-decision region

Started by in Matlab DSP10 years ago

Well I had a similar challenge with the decision region but not any more. From you code, what you need to do is, when you work out the decision...

Well I had a similar challenge with the decision region but not any more. From you code, what you need to do is, when you work out the decision angles (phases)from 0 to pi (anti-clockwise on the constellation), its positive but from 0 to -pi (clockwise) the phases used should be negative. Also take into account the wrap around regions and take decisions seperately for it. Check below to have a bet...

## How to put mark on an image

Started by in Matlab DSP11 years ago 1 reply

Dear Friends, Please take my greeting. I need to put rectangular mark around a specific pixel on an gray scale image and...

Dear Friends, Please take my greeting. I need to put rectangular mark around a specific pixel on an gray scale image and write down a numeric value for that mark (inside or outside of the rectangle). Any one can help me by giving Matlab function or code? Sumon

Started by in Matlab DSP11 years ago

Hello everyone, I am trying to plot range-doppler diagram for an fmcw radar. Here is how I generate transmitted,received and video...

Hello everyone, I am trying to plot range-doppler diagram for an fmcw radar. Here is how I generate transmitted,received and video signal; %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%% clear all; close all; clc c=3e8; %speed of light fc=8e9; %carrier freq deltaF=32e6; %sweep freq T=1e-3; %one period alph=deltaF/T; %sweep rate R=500; %initial distan...

## Gray mapped 8PSK

Started by in Matlab DSP11 years ago

Does anyone know of a way to reduce this code and still achieve gray mapping, because when M (in MPSK) gets higher, gray mapping using the method...

Does anyone know of a way to reduce this code and still achieve gray mapping, because when M (in MPSK) gets higher, gray mapping using the method I used below will be too lenghty. Thanks clear all clc M=8; N=1200; data=rand(1,N)> 0.5; Mpsk_symbol=zeros(1,length(data)/3); for n=1:length(data)/3 p1=data(3*n-2); p2=data(3*n-1); p3=data(3*n); if p1==0 && p2==0 && p3==1

## Sampling frequency offset correction & estimation Speth et al.

Started by in Matlab DSP11 years ago

Hello everyone, I'm having troubles with SFO estimation and its correction on Speth algorithm, since I don't get correct estimated values...

Hello everyone, I'm having troubles with SFO estimation and its correction on Speth algorithm, since I don't get correct estimated values neither in AWGN nor in ideal case. Basically, I add SFO to OFDM signal through interpolation in time domain. Then trying to estimate with following code: temp_pilots_rx=[pos_pilot_symbols_rx_neg; 0; pos_pilot_symbols_rx_pos;]; % separate negative & positi...

## Halfband and FIR filter for decimation

Started by in Matlab DSP11 years ago

Hi, I want to design a decimation filter for a Sigma-Delta modulator. The modulator input is 20Khz sinus signal. And this signal is oversampled...

Hi, I want to design a decimation filter for a Sigma-Delta modulator. The modulator input is 20Khz sinus signal. And this signal is oversampled to 2.5Mhz. So decimation ratio is about 64. First I designed a CIC filter which has a decimation ratio of 16. After a halfband filter and an FIR filter. So halfband filter output is 80 Khz, FIR filter output is 40 khz. Anyway, I want to design halfband ...