159 Threads found on edaboard.com: Matlab Qam
Why don't you ask that (I don't know the answer) in the matlab forum?
I would guess that you have more chances to get help in there.
Software Problems, Hints and Reviews :: 11.03.2004 20:44 :: pardal :: Replies: 2 :: Views: 1892
Okay here is a file that contains a design note on AGCs, and all of the matlab code to illustrate them. Have fun with them,
PLD, SPLD, GAL, CPLD, FPGA Design :: 30.06.2005 00:00 :: Nezami :: Replies: 2 :: Views: 1061
Hi,I am trying to design the timing recovery loop in the qam demodulator.If i have finished the algorithm design of the loop,then how can i verify my design in the matlab/simulink?How can i get the proper input I/Q data and the right output data,which can be used to verify my verilog implementation?
Digital Signal Processing :: 27.09.2005 12:34 :: mhytr :: Replies: 9 :: Views: 24214
Could I get from you matlab coding link for qam-16 demodulator ?
PLD, SPLD, GAL, CPLD, FPGA Design :: 11.03.2006 14:42 :: cat_basilio :: Replies: 3 :: Views: 1300
Need to simulate a channel for transmission of given audio/frames or video data using M-ary qam in matlab. The general architechture in layman terms is as follows
Data - FEC Coding - M-qam Modulation - channel+Noise - M-qam demodulation - FEC Decoding - Output.
If anyone has already simulated such a system, (...)
Digital communication :: 31.03.2006 21:24 :: ars0242 :: Replies: 4 :: Views: 2106
Need to simulate a wireless channel with an M-ary qam scheme for frames/audio or both. The suggested architechute is as follows
Data - Modulation - FEC coding - filter - istropic antenna - Channel+Noise - antenna - filter - FEC decoding - Demodulation - Dataout.
M>32 for qam
BW ~ 6Mhz
If anybody has already simulated such a channel or a s
Digital communication :: 31.03.2006 22:53 :: ars0242 :: Replies: 3 :: Views: 1291
Here SISO Iam talking about is Single input Single Output. Iam designing a Smart Antenna using SISO architecture.
I like to know how do we interface a qam based demodulator(receiver) with the PC and also qam based modulator(Transmitter) side with the PC. I want to use a common PC and program the whole environment. Please explain it.
RF, Microwave, Antennas and Optics :: 27.07.2006 17:17 :: rfrocks :: Replies: 0 :: Views: 517
You can go to the simulink and in the analog modulation section there will be qam. Well i have tried to do OFDM in matlab but i could not find it.. that's the exact model for OFDM is not readily available.
go for the simulink tutorial book given by matlab itself!
Digital communication :: 03.09.2006 21:31 :: pnnavigator0915 :: Replies: 3 :: Views: 1625
Hey friends.. I need matlab code for digital modulation techniques... like ASK, PSK, BPSK, DPSK, qam, QPSK, etc... If you have that, Please post that...
Advance tnxs to you
Digital communication :: 06.09.2006 14:38 :: Raghuvij :: Replies: 24 :: Views: 21343
I want to simulate QPSK modulation in matlab.
The simulation should perform QPSK modulation on input binary sequency and show a waveform plot. Please suggest me how I should proceed. I'm not asking for codes, rather for guidelines only.
Electromagnetic Design and Simulation :: 12.10.2006 14:04 :: magnetra :: Replies: 1 :: Views: 1509
I am tryin to simulate a qam modulation and demodulation. When I use the PSD function, because there are complex values, I get two sided graph, but I am confused what it represents. The part of the code here:
%tx is symbols
Digital Signal Processing :: 14.11.2006 16:08 :: leony :: Replies: 1 :: Views: 1827
Hi every one
I need matlab codes for uniform & non-uniform 64qam
Digital communication :: 18.11.2006 06:07 :: ahmed1 :: Replies: 2 :: Views: 1040
The Communication Blockset of matlab provides digital modulation functions like pskmod, qam, fskmod. However, matlab uses baseband representation (lowpass equivalenta) of modulated signal. I need to display the frequency domain representation of the modulated signal. How do I proceed? How do I obtain passband spectrum from the lowpass (...)
Digital communication :: 02.12.2006 13:09 :: magnetra :: Replies: 4 :: Views: 1780
Degradation due to CFO = ICI + Phase rotation
degradation due to ICI is easy to evaluate. But Can someone provide me a theoretical bound on the phase rotations that can be tolerated by a qam ??
i once made made a matlab program showing transmitted qam symbols phases in phasor chart. on receiver, u can perform a calc
Digital communication :: 20.12.2006 06:09 :: Naveed Alam :: Replies: 4 :: Views: 1193
Can ne one plz give me the matlab code for the simulation of 4qam with SNR vs BER graph?
Digital communication :: 25.01.2007 20:48 :: bee :: Replies: 3 :: Views: 5603
if we have M-Tx and N-Rx antennas respectively,
and using 16-qam,
what is the SNR equation or the noise variance (σ?) we assign in matlab?
please help me.
Digital communication :: 07.02.2007 09:32 :: gama :: Replies: 0 :: Views: 977
see these links in mathworks
Digital communication :: 17.02.2007 18:51 :: islamatef :: Replies: 3 :: Views: 5345
any one of u know how to generate 64 qam in matlab 6.5
please help me
thanks in advance
Digital communication :: 17.02.2007 06:50 :: venkateshkumar :: Replies: 8 :: Views: 11193
I am trying to simulate a 16 qam modulation in rayleigh channel. However the BER is always around 0.5 no matter the Eb/No is.
The channel model I am using is:
ch=1/sqrt(2)*(randn(N,1)+sqrt(-1)*randn(N,1)); where N is the number of bits.
noise=1/sqrt(2)*(randn(N,1)+sqrt(-1)*randn(N,1)); is the AWGN.
s_hat=sqrt(snr(k)).*abs(ch).*X + nois
Digital communication :: 28.02.2007 10:19 :: leony :: Replies: 3 :: Views: 3210
I hv tried to correct some mistakes but i'm was not able to run this code
Pls help me
pls substitue :) by : )
function Y = mod16qam(X,Fd,Fs,Eb);
% 16-qam modulation
% Y = (...)
Digital communication :: 17.03.2007 07:23 :: honhungoc :: Replies: 0 :: Views: 1205
You simpliy map the different digital codes to differnt amplitude values on I and Q carriers. There is nothing specific as this is avery simple mechanism.
Checkout matlab user contributed files.
Digital Signal Processing :: 06.04.2007 06:10 :: brmadhukar :: Replies: 1 :: Views: 881
Hello all :)
I need some help please in getting the theoritical BER curve of 16-qam using matlab
Your help is much appreciated :D
Thank you very much
Digital Signal Processing :: 03.05.2007 12:25 :: Na3noOo3 :: Replies: 0 :: Views: 999
i need the projects in matlab, like qam implementation, communication system in matlab.
Digital Signal Processing :: 15.05.2007 00:50 :: saeedanwer_11 :: Replies: 0 :: Views: 760
Hello all ,,
I really need your help to find out a good and breif reference about
Quadrature Amplitude Modulation (qam) , i want information about its
concepts , equations , and if it includes qam implementation using matlab it
wwill be very nice and i will be grateful
i am waiting for your help
thank you any way
Digital communication :: 17.05.2007 10:38 :: Spacetoon :: Replies: 13 :: Views: 1469
I am new to matlab and was trying to simulate BPSK and QPSK in matlab.
I had a queiry regarding noise scaling .Why the noise is devided by sqrt(1/ebno) and sqrt(2) . Here is sample programme
noise=sqrt(1/ebno)*randn(1,100) % for BPSK
Digital Signal Processing :: 31.05.2007 05:09 :: umardar27 :: Replies: 4 :: Views: 1598
can anyone plz forward me 16qam matlab code?
Digital communication :: 20.06.2007 10:27 :: bee :: Replies: 7 :: Views: 3624
any one has the matlab code for the Symbol and bit error probability of:
1- Orthogonal signals.
2- M-ary PAM.
3- M-ar PSK.
4- M-ary qam
Software Requests :: 26.06.2007 17:41 :: saeddawoud :: Replies: 0 :: Views: 163
I require matlab code for digital communication simulation.
Digital Signal Processing :: 02.07.2007 07:17 :: amiran2001 :: Replies: 12 :: Views: 22145
I have simulated a qam modulation in AWGN and I want to compare my result (e.g; BER vs. SNR) with a reference to be sure of my detection accuracy.
Can you introduce me a reference.
Proakis' figures are : BER vs. Eb/N0 as well as matlab BER Tool.
I have defined SNR as : the ratio of the power of signal to power of noise at the receiver.
Digital communication :: 17.07.2007 03:08 :: mro83 :: Replies: 2 :: Views: 4820
i need a matlab source code for simulation of BER of M-qam with even and odd number of bits per symbol.
if you can please send for me
Digital communication :: 03.08.2007 09:49 :: mardani2 :: Replies: 0 :: Views: 999
hi to all,
I built a communication system with matlab using the qam modulation method.
I didn't use the Simulink?.
allso I'm using the Square Root Raised Cosine at the receiver and transmitter with rolloff 0.4
the system works fine but I have problem to measure the Eb/no.
I can't use the AWGN function to add noise but only the RANDN func
Digital communication :: 13.09.2007 04:42 :: sagid :: Replies: 0 :: Views: 1650
all of their modulator and demodulator can be found in matlab comm toolbox.
Digital Signal Processing :: 02.10.2007 06:16 :: wwfhm2002 :: Replies: 4 :: Views: 964
is there anybody who can help me in getting
matlab codes for matched filter and qam .
if yes then u can mail it at
Electromagnetic Design and Simulation :: 21.10.2007 13:49 :: nitin_buddy :: Replies: 2 :: Views: 9532
Normally you can get lots of simulink related material on the web... here are some... go through these links...
Digital communication :: 23.10.2007 07:34 :: sinu_gowde :: Replies: 3 :: Views: 1142
I need matlab source code for viterbi decoder of 16-qam modulation. matlab help
has viterbi decoding function only for BPSK. How i can use this function to simulate
Digital communication :: 27.01.2008 04:30 :: mardani2 :: Replies: 1 :: Views: 1795
IEEE 802.11a WLAN model:
Digital communication :: 27.01.2008 05:00 :: VSWR :: Replies: 1 :: Views: 1878
matlab provides the inbuilt function for qam. Here is the code...
just try over this
Create a random digital message
M = 16; % Alphabet size
x = randint(5000,1,M); % Message signal
% Use 16-qam modulation.
y = qammod(x,M);
% Transmit signal through an AWGN channel.
ynoisy = awgn(y,15,'measured');
% Create (...)
Microcontrollers :: 05.03.2008 03:32 :: Sreya39 :: Replies: 1 :: Views: 1187
I need to simulate a channel for data transmission using M-array qam in matlab. The general architecture is as follows
Data Generation - FEC Encoding - M-qam Modulation - Channel+Noise - M-qam Demodulation - FEC Decoding - Output.
Anyone has already simulated such a system, could you send the (...)
Digital communication :: 11.03.2008 05:38 :: boonhoi :: Replies: 1 :: Views: 868
I've just studied FPGA for a short time. At that time, I've built successfully a qam-16 modulation project using VHDL code. But now, when I try to build qam demodulation, I've met a big problem. I've done the demodulation in matlab, but in FPGA, I can not synchrolize the receive signal with the carrier recovery. I mean I can't recover (...)
PLD, SPLD, GAL, CPLD, FPGA Design :: 04.04.2008 12:13 :: thieuhiep :: Replies: 3 :: Views: 1890
PSK - qam demodulators matlab simulation
according to Nezami book
not CDMA but very good for digicom
Digital communication :: 07.05.2008 03:44 :: fontp :: Replies: 3 :: Views: 2010
i need matlab coding for baseband modulation technique
Added after 46 seconds:
i need coding baseband modulation
Digital communication :: 14.08.2008 01:01 :: nirmal3kumar :: Replies: 5 :: Views: 1660
I need to design a QPSK and qam receiver in Simulink based on the provided transmitter design. It is meant to simulate transmission of data through a wireless channel. In this case an image is the data to be transmitted and my receiver has to receive the data with the highest possible efficiency. This is done by comparing the sent and
Digital communication :: 05.09.2008 23:12 :: selva500 :: Replies: 0 :: Views: 1810
True - check out matlab help!
Digital Signal Processing :: 06.10.2008 10:16 :: cheggy :: Replies: 4 :: Views: 4920
I AM IMPLEMENTING THE PAPER
A SIMPLE TRANSMIT DIVERSTY TECHINIQUE FOR WIRELESS COMMUNICATION
BY SIAVISH M ALAMOUTI IN matlab.
THE PROBLEM IA FACING IS THAT I AM USING PSK AND qam MODULATION
THE CODE WORKS WELL WITH PSK MODULATION BUT WHEN IT IS UP TO qam IT DOESNT GIVE ME CORRECT BER FOR M>4 I AM USING EQUATION NUMBER 4 OF THAT PAPER FOR (...)
Digital communication :: 24.02.2009 10:44 :: naheem84 :: Replies: 4 :: Views: 702
do you need programs?
please see this group:
also if you need programs, i can help you by matlab
Digital communication :: 26.03.2009 07:52 :: Aya2002 :: Replies: 5 :: Views: 2884
can any one help me?
I need matlab code for ofdm using reed solomon coding through awgn and rayleigh fading channel using qam modulation.
Its very argent
Digital communication :: 31.03.2009 15:48 :: shomapto :: Replies: 3 :: Views: 3680
It would be very helpful if you could provide me an matlab code for representing an noisy communication channel.
Digital Signal Processing :: 15.04.2009 21:20 :: sanamnitin :: Replies: 1 :: Views: 1535
This is a matlab code which gives u a Symbol error probability curve for 64-qam modulation .
Now I want someone to explain me this code in detail right from the beginning . How does it work ?? I would really appreciate that .
Here is the Code:
N = 7*10^5; %% num
Digital communication :: 25.04.2009 17:09 :: johnnycage65 :: Replies: 0 :: Views: 1133
after using modulate(Mod,tx) funchtion, we get the Internal Time Vector, right?
so, then how to plot in time domain this signal in matlab?
hmod = modem.qammod(M);
M = 16; %16-qam
tx = randint(500,1,M);
qamSig = modulate(hmod,tx);
qamSig = (...)
Digital communication :: 25.05.2009 02:20 :: mashhur :: Replies: 0 :: Views: 618
can anybody help me to design the Mqam receiver using sytem generator xilinx? i studied the example the 16qam demodulator in the matlab..but it is too complicated since the application is for SDR.
my design specification using veterbi decoder with awgn channel..
if someone can be so kind and experienced in system (...)
PLD, SPLD, GAL, CPLD, FPGA Design :: 26.05.2009 04:19 :: rzahiedaki :: Replies: 0 :: Views: 1046