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502 Threads found on edaboard.com: **Gaussian**

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

Digital Signal Processing :: 10-30-2016 16:45 :: DSP_user :: Replies: **1** :: Views: **1034**

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

Digital communication :: 10-16-2016 12:33 :: Silver_King :: Replies: **0** :: Views: **1**

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

Digital Signal Processing :: 09-24-2016 15:15 :: David83 :: Replies: **2** :: Views: **747**

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

PLD, SPLD, GAL, CPLD, FPGA Design :: 08-08-2016 08:48 :: dpaul :: Replies: **3** :: Views: **1199**

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

PLD, SPLD, GAL, CPLD, FPGA Design :: 07-28-2016 08:55 :: Anwesa Roy :: Replies: **15** :: Views: **1408**

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

RF, Microwave, Antennas and Optics :: 07-28-2016 04:55 :: smn_eb :: Replies: **0** :: Views: **416**

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

Electromagnetic Design and Simulation :: 06-17-2016 14:54 :: mosaoud :: Replies: **0** :: Views: **451**

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

Software Problems, Hints and Reviews :: 04-21-2016 02:02 :: iVenky :: Replies: **1** :: Views: **788**

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

Digital communication :: 04-12-2016 14:33 :: zorro :: Replies: **7** :: Views: **1491**

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

RF, Microwave, Antennas and Optics :: 03-21-2016 16:59 :: Reschak :: Replies: **0** :: Views: **626**

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?

Analog Circuit Design :: 03-18-2016 15:40 :: dick_freebird :: Replies: **10** :: Views: **1547**

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

RF, Microwave, Antennas and Optics :: 03-01-2016 10:54 :: Alberto5588 :: Replies: **0** :: Views: **2**

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

Digital Signal Processing :: 02-26-2016 20:11 :: AeonJo :: Replies: **1** :: Views: **1011**

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.

Digital Signal Processing :: 02-21-2016 13:25 :: ANTI_HACKER :: Replies: **2** :: Views: **945**

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.

Microcontrollers :: 02-21-2016 13:22 :: ANTI_HACKER :: Replies: **0** :: Views: **513**

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

Electromagnetic Design and Simulation :: 01-04-2016 10:45 :: Fenerli07 :: Replies: **3** :: Views: **1343**

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

Digital communication :: 10-29-2015 14:09 :: senmeis :: Replies: **0** :: Views: **1012**

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).

Digital communication :: 10-09-2015 10:05 :: anuribs :: Replies: **0** :: Views: **1027**

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

Digital Signal Processing :: 09-19-2015 12:31 :: tripoliguy :: Replies: **0** :: Views: **738**

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:

Network :: 08-28-2015 20:02 :: Ali Mudheher Al-Qamaji :: Replies: **0** :: Views: **1251**

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