Sign in
Search matlab
Subscribe to matlab
matlab by Keywords
Atanh | Autocorrelation | Bandpass Filter | C++ | Conv | Database | Deconv | Excel | FFT | Filter | Filtering | FIR | Fourier Transfrom | FSK | Gaussian Noise | Haykin | IFFT | Image | Java | LFSR | LMS | LPC | MEX | OFDM | QPSK | Radix | Random | Sampling | Segmentation | Simulink | Visual Basic | Waveform | Wavelet
Sponsor
Discussion Groups
See Also
Discussion Groups | Matlab DSP
Technical discussion about Matlab and issues related to Digital Signal Processing.
Search Results for "qpsk"
QPSK Spectrum in simulink
dpas...@gmail.com - Dec 10 2009
Hi everyone.
I just want to plot the QPSK baseband spectrum from the output data of the QPSK simulink block.
However the output of this block are the symbol coordenates in th... 
Alamouti scheme using QPSK [2 Articles]
nammi sairamesh - Mar 13 2006
Hello,
I simulated the SPACE TIME BLOCK CODED system
based on
Alamouti scheme, where the modulation is BPSK. Now I
am trying to
extend that to QPSK and higher modula... Simulink model of a QPSK modem
alda...@ensieta.fr - Apr 11 2006
Hi everybody,
I'm working on a Simulink QPSK modem for a Altera Stratix platform and I'm a bit lost. Does anybody have a model in simulink of a QPSK modem that can help me devel... QPSK for BER performance
centuriaky - Dec 13 2003
hi all,
Below is the QPSK i have done to calculate the BER. However, the
dectection part is wrong. Can anyone advise what is the correct
syntax.
Apprecia... QPSK [2 Articles]
hari_asv - Nov 3 2004
Can some one get me a source code as to how i go about simulating
qpsk symbols? The constraints are: symbol rate - 1 /sec and chip
rate is 128sec.
... measuring Baudrate from QPSK signals [3 Articles]
bochao76 - Nov 9 2006
Good morning,
does anybody has an idea, how to measure the baudrate also known as
the symbolrate of a QPSK signal - I have a Real-Array and an
Imag-Array of data-streams?
... Symbol Sync for QPSK !!
abhishek agarwal - May 1 2006
Hi all,
i trying to implement the QPSK mod and Demod in matlab. I'm not able to get the Symbol Sync for QPS based on Early and Late Gate Integrators. Can one help me re... Qn on QPSK demodulation
ying...@yahoo.com.sg - Dec 22 2008
Dear all,
I've a problem demodulating in QPSK.
My transmitter is a vector signal analyzer (VSG) and a labVIEW programme is used to capture the data. Matlab is used to despread ... creating BPSK, QPSK, DPSK modulated signals
Jim Lee - Nov 20 2003
I need some help in creating BPSK, QPSK, DPSK modulated signals. If someone
know the modem design by using the signals above, it will be great help
Thanks
... QPSK Simulink model
alda...@ensieta.fr - Mar 24 2006
hello,
I'm new in that kind of mailing list and ,also, in DSP so if I ask for some stupid questions or I don't ask for things properly, I'm sorry.
I'm a student and I'm trying ... simulating QPSK modulation [2 Articles]
mosse_adam - Oct 22 2002
Hi,
I want to simulate a QPSK transmission through a multipath channel. I
see that some people use 1 sample per symbol while others use 8 or 16.
Could someone ... Passband QPSk modulator...simul
k_ajay1 - Jul 30 2002
Hi,
I am having a weird problem with a passband QPSK simulation I am
working on. I just need the modulated output for further pprocessing
and dont want the demodu... SOVA for QPSK symbols.
Karthik Iyer - Sep 17 2005
Hi All,
I am new member of this group and I need a method to compute the soft decisions using SOVA for QPSK symbols. I am using a rate 1/2 systematic convolutional code wit... a simulink question about upconversion in a Com system
rudy...@yahoo.com - Feb 17 2010
Hi,
I am trying to advance my knowledge on a QPSK communication system.
I found a simulink simulation that describes a communication system. I tried to contact the author, b... QAM demapper [2 Articles]
r_i_k_k_a_r_d_o - Mar 1 2007
Hi,
is there anyone who can explain me how does it work the QAM demapper
in the DVB demo of Simulink?
Can you please give hints on how create a demapper for 16 QAM and QPSK?
... STBC
alma...@gmail.com - May 18 2006
hey.....
in STBC design signal constelletion as complex and real where real code rate is full and complex rate is 0.5. r they conside as complex signal is as real part and imagin... bits to symbols and vice versa [3 Articles]
Toivon Sarastus - Nov 30 2002
Hi,
Is there some easy way to encode and decode QPSK symbols to bits?
For exmple 0 -> 00, 1-> 10, 2 -> 01, 3 -> 11.
I didn't find any function that does that. ... SC-FDE
sundar janaa - Oct 6 2005
Dear all,
I am simulating Single Carrier Frequency Domain
Equalizer in AWGN Channel.. I used the QPSK BER curve
and modified that to make the SC-FDE. I am using 512
fft ... Frequency divider [3 Articles]
sasilion - Jan 18 2003
Hi Guys,
My question has something to do with frequency multiplier and
divider in a PLL. For example, before a QPSK is fed into a PLL, i
have to pass the signa... Frequency division multiplexing
susan_w_burke - May 19 2004
Dear Sir:
I am simulating a frequency division multiplexing of K channels.
The sources are random integers. The modulation is QPSK.
=What kind of lowpass fi... Newbie to OFDM [2 Articles]
Rohith Ramnath - Nov 1 2007
Hello Everyone,
I started working recently on OFDM. I am trying to use simulink to
build a simple system with four sub-carriers. However, I am unable to
comprehend the resul... simulation of ofdm with QPSK in Rayleigh channel
dece...@yahoo.com - Sep 29 2008
hi;
i have simulated a general ofdm system but i am not having correct results. can any one rectify problems in this code. have i used correct formulas in this code? i mean does R... OFDM USING MATLAB
gloria57_99 - Nov 7 2003
Hi
Iam doing my final project in OFDM System suing QPSK modulation
technique... and Iam facing real troubles dealing wiht its matlab
programs !!!
I have the pro... phase of rayleigh envelop [3 Articles]
mira...@yahoo.com - Mar 2 2008
hi
i have written matlab code for rayleigh fading using BPSK and QPSK
i generate a rayleigh distribution by generating two identiaccly independently generated gaussian vectors a... OQPSK or MSK delay problems
dpas...@gmail.com - Jan 12 2010
Hi all!
Basically my project is a bit generator+spreader+modulator --> demodulator+despreader.
A 4 bit sequence is converted to a 32 chip sequence by the spreader.
If I u... need help about rayleigh fading [4 Articles]
"n.mie_arul" - Feb 11 2008
hi everyone..now i started my last year project about Rayleigh Fading
using OFDM system..i have a problem when using QPSK modulation..Below
is a my coding..anybody know how to ... Re: LLR demodulator and APP decoder
nammi sairamesh - Nov 7 2007
U can write ur own APP decoder for that using BICM
concept.
BR,
-SaiRamesh.
--- f...@tee.gr wrote:
> Dear colleagues,
>
> is there anybody that has connected a LLR
> ... frequency selective fading for OFDM [2 Articles]
nishchal chaudhary - Mar 25 2005
hii all,
I am trying to make a simulation program for OFDM.My
modulation technique is BPSK.after doing the mapping of original to
BPSK signal space, I am taking sa... OFDM Simulation
sundar janaa - Oct 12 2005
Dear all,
I have some problems regarding the simulation of OFDM
Chain to obtain the BER curve...Pls help me ..it is
very urgent. Great helps are appreciated.
1). Noise V... multilevel modulation
Moin Syed - Feb 28 2001
hi what does this statement means " The modem uses 16 tones and are QPSK modulated in 3-3400Hz bandwidth".
is that means
16 frequencies are marked... Some pieces of Software
Ramiro Pedros - Oct 30 2000
Hello,
I just wanted to ask some help regarding digital communications. Could
anyone send me any piece of information concerning how the
non-linearities of cer... QPSK or BPSK for ZF equalization
pado...@libero.it - Sep 23 2005
Hi all!!
I implemented in Matlab some different ZF equalizations, but I should change the input signal froma random [+1/-1] signal to a QPSK or BPSK signal (choosing number of... Re: FSK modulation
peter yip - Dec 12 2002
Hi digicomm
I need help with my QPSK with a set of data bit to
extract. I am having great difficulties in modulating
and demodulating it. Would highly apprecia... 802.11b matlab simu: pls comment
Abhishek Mitra - Mar 13 2003
% This Program is (C) of Abhishek Mitra, B.Tech 3rd Yr 2002
% 5.5 Mbps CCK Simulation using specs from IEEE 802.11b, No
guarantees and warantees!
%The first...