help in plotting power spectra of FSK modulation

Started by mail_harpreet in Matlab DSP15 years ago

i have been trying to get the power spectra of an FSK modulated scheme...i am getting a very good spectra for m-ary psk and msk and ...

i have been trying to get the power spectra of an FSK modulated scheme...i am getting a very good spectra for m-ary psk and msk and other schemes by using the fft function and squaring it...but for fsk in which we shud get a peak at f=1/2*Tb ...caan anyone suggest what wud be the bes


Fsk code

Started by naim...@yahoo.com.sg in Matlab DSP10 years ago

Hi,I would like to ask about my Fsk code.Why when i change my ts value to 0.05 or 0.005,i'm not able to get the correct Fsk signal?Anybody can...

Hi,I would like to ask about my Fsk code.Why when i change my ts value to 0.05 or 0.005,i'm not able to get the correct Fsk signal?Anybody can help me?Below is what my code looks like.. echo on t0=0.6; %signal duration ts=0.0005; %sampling interval fc=200; %carrier frequency kf=50; %modulation index fs=1/ts; %sampling frequency t=(0:ts:t0); %tim...


FSK modulation

Started by John in Matlab DSP15 years ago 4 replies

I'tyring to generate a bit stream that will be modulated using an FSK signal. So far what I have is when I plotted the graph what I...

I'tyring to generate a bit stream that will be modulated using an FSK signal. So far what I have is when I plotted the graph what I have is not an FSK signal but a bit stream.... bit = round(rand(1,10)); % bit stream of random 1's and 0's bitperiod = 0.1; %bit period fs


help needed 'fsk and bpsk simulation'

Started by lizar_indra in Matlab DSP12 years ago

Dear MATLAB users, i am new in using matlab and i want suggestion what sould i do? or may be a solution, here's my problem: how to make ...

Dear MATLAB users, i am new in using matlab and i want suggestion what sould i do? or may be a solution, here's my problem: how to make graphically simulation if I want to send a character (as data input) with different bit rate from 100 ? 9600 bps using FSK and BPSK method, because I want to find the better method between FSK and BPSK method with var


FSK modulation and demodulation

Started by vd.a...@yahoo.co.in in Matlab DSP8 years ago 3 replies

Hi, I am new to digital communication area. I want to FSK modulate my .wav file and also demodulate it in matlab (& also in simulink). After...

Hi, I am new to digital communication area. I want to FSK modulate my .wav file and also demodulate it in matlab (& also in simulink). After going through matlab documentation and demo, i found that FSK modulator (in simulink or in matlab) accepts only binary data (zero's and one's) as input. I am unable to convert my .wav file into binary as it is already in integer format also includes neg...


non-coherent FSK demodulation using quadrature receivers

Started by Louis Angeles in Matlab DSP15 years ago

Hello, I've been working on an FSK non-coherent demodulation using a quadrature receiver. I was actually getting some ambiguous...

Hello, I've been working on an FSK non-coherent demodulation using a quadrature receiver. I was actually getting some ambiguous results maybe you guys can check it out. Anyway, here's my code %%%%%%%%%%%%%%%%%%%%%% demodulation %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% N = 100; % number of samples


Need real FSK demodulator model

Started by george_barr in Matlab DSP14 years ago

I am a newbie to Matlab. Does anyone have an already built matlab model preferably using blocksets that will demodulate FSK data? I...

I am a newbie to Matlab. Does anyone have an already built matlab model preferably using blocksets that will demodulate FSK data? I am trying to demodulate pager signals using the input device coming from the computers MIC-IN or a WAV input file. Any help is appreciated.


V.23 Receiver Matlab Code

Started by ap_purohit in Matlab DSP12 years ago

Hi, This is Amit.I am working in Audio Processing Group.I am in urgent need of V.23 Receiver (FSK Receiver at 1200 Bit/sec) Matlab...

Hi, This is Amit.I am working in Audio Processing Group.I am in urgent need of V.23 Receiver (FSK Receiver at 1200 Bit/sec) Matlab code.I have got the basic idea of the V.23 receiver, in form of different blocks.I am working on CallerID DTMf/FSK typeI and typeII implementation.IF any one can help me out,i will be really thankful. Regards,


Matlab's BERtool and Theoretical curves for M-FSK

Started by Nandan Das in Matlab DSP6 years ago

I am looking at the theoretical performance of orthogonal M-FSK (received noncoherently) using bertool. The documentation says that it uses...

I am looking at the theoretical performance of orthogonal M-FSK (received noncoherently) using bertool. The documentation says that it uses Equation 8.66 of Simon and Alouini's "Digital Communication over Fading Channels". This equation can also be shown to be identical to Eqn 3.123 of Sklar's book on Digital Communications and the adjoining Fig. 3.34. But bertool's graph has about a 0.5dB wo...


Help! on ASK, FSK, BPSK demodulation

Started by hwcl...@gmail.com in Matlab DSP10 years ago

Hi, I didn't use the default functions in matlab to plot modulations. I use my own code. Do you guys have any suggestion how to generate...

Hi, I didn't use the default functions in matlab to plot modulations. I use my own code. Do you guys have any suggestion how to generate demodulation plot? Do I have to use "xcorr"? my code are as follow: h=[1 1 0 1 0 0 1 1 1 0]; bit=[]; for n=1:2:length(h)-1; if h(n)==0 & h(n+1)==1 se=[zeros(1,50) ones(1,50)]; elseif h(n)==0 & h(n+1)==0 ...


Powerline communication problem

Started by mohsen bahrami in Matlab DSP10 years ago

Hi friends, I have been investigating on the applicability of power line communications techniques. I want to simulate the plc system in ...

Hi friends, I have been investigating on the applicability of power line communications techniques. I want to simulate the plc system in MATLAB (m file).The simulation includes FSK and PSK and OFDM modulation and demodulation , error control coding , powerline channel and the noise over it. I have some problems with these simulations . I want to know if you have any MATLAB files (m fil...


questions on the function ddemodce

Started by pengjiang662003 in Matlab DSP15 years ago

I am confused with the using of ddemodce.In the syntax ddemodce (x,Fd,Fs,'fsk',M,Tone),how can I specify the two carrier frequency? ...

I am confused with the using of ddemodce.In the syntax ddemodce (x,Fd,Fs,'fsk',M,Tone),how can I specify the two carrier frequency? What is the meaning of "tone spacing"? Who can help me?


Help doing correlation detector in mat lab

Started by sumanth in Matlab DSP13 years ago 3 replies

Hai, I am doing project on FSK detection using correlation detector.i stuck on integration part.i am getting discrete...

Hai, I am doing project on FSK detection using correlation detector.i stuck on integration part.i am getting discrete values.but in built funciton "int" in mat lab is continuous function..so i need help on this part..how can i use integrator for discrete value