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# Gaussian

502 Threads found on edaboard.com: Gaussian

## Does delta sigma ADC reduce gaussian noise on input to ADC or quantization noise only

The motive for posing this questions arises from a difference of analysis between a colleague and myself. Our general environment is in the construction of an analog front end which takes in signals to an instrumentation amp in the low microvolt range. followed by a gain stage, which then feeds a 24 bit delta sigma converter. My understanding

## Basic questions to clarify some concepts

Hi everyone, I'm trying to simulate an OFDM following a few steps, and I'm stuck at the first: The first step: You have a channel with independent zero mean complex gaussian taps along with exponentially decaying power profile E{|hk|2|}=e-k/3 with k ∈ First of all, does this nota

## Rayleigh model. X and Y independent?

When you write h=X+jY then X and Y are orthogonal. And since they are gaussian random variables then they're independent.

## How to generate Gaussian noise using vhdl that will be synthesizable?

Please post a code so that we can generate gaussian noise using vhdl that is synthesizable. The non synthesisable code is givenbelow. You may also mention the portions that we can edit in this program to make it synthesisable. That's like asking to do the homework. I am providing an alternative! Can't you not translate the co

## How to add Gaussian noise/any other noise to sine wave(using VHDL)?

We need a noisy sine wave signal. We have generated the sine wave(using VHDL), but we cant figure out how to add noise to it. We are including the code for sine wave generation. Kindly mention how to add gaussian/any other noise to it. library IEEE; use IEEE.STD_LOGIC_1164.ALL; use IEEE.NUMERIC_STD.ALL; --try to use this library as much

## Ultra-Wideband Pulse Generation (Gaussian vs Gaussian monocycle)

Hi, What is the difference between a gaussian pulse and gaussian mono-cycle pulse? Thanks

## TF/SF to generate plane wave in 3D

Hello, please can anyone provide me with the expression of the gaussian pulse in 3D Thanks for all!

## Is it possible to model the impulse response using a block in virtuoso?

Hi, Is there a block in virtuoso where I can input the time domain impulse to get the required characteristics? The reason why I am asking is because I am trying to model an optical channel which has a gaussian impulse response and modeling the transfer function using svcvs is a bit tedious. I have the time domain impulse response and it would b

## BPSK Communication Systems in real life

GPRS (General Packet Radio Service) uses GMSK (gaussian Minimum Shift Keying). This is (can be seen as) a variant of OQPSK (Offset QPSK) coherently detected. Z

## Injecting noise to see Bit error rate response of coaxial cable

Hi I'm experimenting with power line communication by connecting 2 modems (Texas Instuments PLC developer's kits) through 100m of RG58 coaxial cable as a model power line and injecting white gaussian noise with a signal generator. The modems exchange modulated packets of data shown in fig 1. I was hoping to see the response of the Bit error r
Log-normal or other non-gaussian / non-uniform stats will have means that are not centered in the span. Nonlinear circuit elements can make response of uniform stats, one-end-weighted. I have not seen the form of stats posted by erikl but the std= appears to make an unequally-weighted distribution?

## measuring a sine on a spectrum analyser

Hello everybody, i'm new in the forum. I have a fundamental doubt and I can not get over it. If I measure a sine on a spectrum analyzer, how I can measure it's bandwidth? Let's suppose a have a gaussian shape with a certain 3db bandwidth; my problem is that if I change the frequency window, resolution and sampling time/points, my result changes

## Gabor filter for fingerprints enhancement

Hello everyone :) I'm working on a project for fingerprints recognition and I'm actually trying to code the Gabor filter but I'm encountering many problems though I'm applying the exact formula of the filter!! I don't know what's the problem. I start by normalizing the image (mean = 0 and variance = 1) Then I calculate the local orientation

## MMSE of a Gaussian noisy image

Hi everyone, I have a gaussian noise corrupted image and I need to know how can I find the MMSE estimate of the entire noisy image in MATLAB? or how can I find the MMSE estimate of a gaussian noise vector/signal (because I can divide the entire image into small patch vectors)? Thanks.

## MMSE of a Gaussian noisy image

Hi everyone, I have a gaussian noise corrupted image and I need to know how can I find the MMSE estimate of the entire noisy image in MATLAB? or how can I find the MMSE estimate of a gaussian noise vector/signal (because I can divide the entire image into small patch vectors)? Thanks.

## [CST] Loss Calculation - Gaussian Excitation

Hi all, I just started some weeks ago working with CST and have a question concerning F-Parameters. I want to calculate losses which occur if you want to couple light from a laser into a waveguide. For this i used a gaussian excitation (Home->Solver->Sources->gaussian Excitation) as source and placed a waveguide above it. Afterwards I placed

## GMSK modulation in Simulink?

Hi, The parameter "Frequency pulse shape" in "CPM Modulator Baseband" block in Simulink can be chosen as gaussian: this the so called GMSK modulation? Senmeis

## Plotting antenna pattern in MATLAB

I have a beamformed output, say y = weights * signal, where the signal is gaussian,i.e signal = randn( 1 , 1e5 ). Now I want to visualise the output in angular domain, i.e I want to plot the gain of the resulting signal y as a function of elevation angles. I am considering the mainlobe of 'signal' to be pointing in (0 azimuth,0elevation).

## Problem with restoration by Particle filter

Hi all, please can any one help me to find the problem with this code i want to restore an image with it but the result is a black image Img = imread('C:\images\lena.jpg'); %Img= rgb2gray(Img); Img=im2double(Img); V =0.001; clc; x_N=V ; x_R=V *2; NImg=imnoise(Img,'gaussian'); % it was NImg=imnoise(Img,'gaussian',Var); sub

## Gaussian Source, Noise, and and Distribution for wireless sensor network?

in my recent work for wsn , i faced some questions about what is the differences gaussian Source ,gaussian *Noise,and and gaussian Distribution nodes for wireless sensor network . and how i can implement that in matlab ? :shock::shock::shock: