1000 Threads found on edaboard.com: Fsk And Psk
I am newbie in RF field, I just wanna to know how much fast the data rate ASK and fsk and psk modulation can go? another question is why there are no RF module in the industry using psk modulation in their chipset at 315MHz and 433 Mhz?? Thanks!!
RF, Microwave, Antennas and Optics :: 04-14-2003 21:18 :: skynet :: Replies: 2 :: Views: 2845
what are the advantage of ASK over psk and psk?
Electronic Elementary Questions :: 03-08-2012 11:22 :: firas90 :: Replies: 2 :: Views: 2129
i using vhdl simulation software MODELSIM SE, i planned to write a code for fsk,psk modulation and demodulation, can anyone help me on this, and also i need use work.sine_package.all library to be included in that, where i can find that??
Electronic Elementary Questions :: 01-28-2006 05:28 :: brahma :: Replies: 0 :: Views: 1293
i am new to vhdl. Is it possible to design fsk, psk modultion and demodulation in MODELSIM( bcoz thats what i have), i dont know how to bring sine wave in that..can anyone help me. otherwise anyother simulation tool is available for this???
PLD, SPLD, GAL, CPLD, FPGA Design :: 01-28-2006 05:34 :: brahma :: Replies: 6 :: Views: 2159
Modulation is when you have a low frequency signal and you want to transit it for exemple, it's useful to grow up its frequency, so you use a modulation method (AM FM PM in analogical modulations ASK fsk and psk for digital ones).
AM or ASK is an amplitude modulation: it's about variying the amplitude of a high (...)
Digital communication :: 11-08-2006 15:07 :: jakjoud :: Replies: 9 :: Views: 7210
I am trying to design a Class-E amplifier to generate fsk and ASK signals. How should i start at attempting this design. Any bros can help? I really appreciate it.
Electronic Elementary Questions :: 06-16-2007 04:57 :: silverstar_28 :: Replies: 3 :: Views: 1189
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 (...)
Microcontrollers :: 05-01-2009 04:37 :: Mai Ahmed Samy :: Replies: 0 :: Views: 897
Please, can anyone tell me how to plot the signal constellation of ASK, fsk and psk
in the presence of noise using Matlab codes.
Thank you very much indeed
Digital Signal Processing :: 12-20-2005 07:57 :: Na3noOo3 :: Replies: 3 :: Views: 3834
Do you have any idea about this title?
An FM Modulator/Demodulator using fpga
The modulation may be fsk or Xpsk!
PLD, SPLD, GAL, CPLD, FPGA Design :: 03-05-2007 16:14 :: eelinker :: Replies: 4 :: Views: 6282
Please inform about good e-books and sites that have modulator and demodulator design and tutorial (for fsk and psk)
Electronic Elementary Questions :: 09-15-2008 03:33 :: adeel.sid :: Replies: 1 :: Views: 669
I have attached the frequency spectra of fsk and psk.can some one please explain why these figures look different, why is it that the peaks are formed only for fsk modulated signal and not for psk signal.
Digital Signal Processing :: 05-06-2011 15:51 :: jess17 :: Replies: 0 :: Views: 333
The OP didn't yet ask for the code...
For many applications, a NCO (numerical controlled oscillator) vendor IP will offer all what you want. If you think of modulating an existing carrier, you should consider that both fsk and psk involve a signal manipulation in time domain.
PLD, SPLD, GAL, CPLD, FPGA Design :: 01-13-2012 04:14 :: FvM :: Replies: 3 :: Views: 790
i want the differences between ASK and AM ,fsk and FM ,psk and PM'' be precise i want to know Analog modulation versus Digital modulation(ASK vs AM,fsk vs FM, psk vs PM). which one is terms of bandwidth,SNR or
P(e), modulating and (...)
Electronic Elementary Questions :: 02-15-2006 05:48 :: electronics_kumar :: Replies: 8 :: Views: 22651
I would like to design a wired communication system between 2 buildings say 150 meters apart.
My idea is to design a transciever which can be used on both ends of the wire channel
Transciever will employ either fsk or psk for data transmission/reception
I would like to know how to estimate minimum signal power required to transmit data
Analog Circuit Design :: 01-28-2012 16:23 :: edinburghtech :: Replies: 3 :: Views: 544
The psk will have 3 dB better performance at the cost of more complex receivers. The reason for the 3 dB is that fsk is orthogonal and psk is antipodal. This may not mean much to you but the distance between the two signal points is 1.414 times larger for psk.
RF, Microwave, Antennas and Optics :: 11-30-2004 14:49 :: flatulent :: Replies: 3 :: Views: 1424
For radio sistems narrow band (12,5 or 25 Khz)
-ASK. Simple and cheap (ususally AM systems)
-Ffsk. Reliable and very good BER.
-psk has a higher speed but perhaps is more dificult adjustment if you are using links betwen your diferent stations.
I hope this helps a bit.
Electronic Elementary Questions :: 03-05-2006 17:31 :: Pont de Pedra :: Replies: 8 :: Views: 16799
ya the demodulator should be aware of the input time slot... but in the case of fsk if a PLL is used for demodulating then it is not necessary that it should be aware of the input time slot unless the other frequency used is not in the PLLs capture range........
Can u specify what u r using for demodulating the fsk signal.........
Digital communication :: 06-21-2007 01:56 :: A.Anand Srinivasan :: Replies: 8 :: Views: 1795
first Same MEAN POWER (1/2 of ones's and 1/2 of zeros'), Amplitude equal for all waveforms (ASK, fsk, psk, etc)
then compare things:
ASK detector have one branch. Noise in only one branch. Mean Power
fsk detector have two branches. Noise in two branches. 2xMean Power
psk detector only one branch. (...)
RF, Microwave, Antennas and Optics :: 10-19-2008 14:42 :: teteamigo :: Replies: 2 :: Views: 2953
i need matlab programs of ask,bpsk,fsk,dpsk,qpsk etc. of digital communications.
Digital communication :: 11-08-2008 09:13 :: ermonagarg24 :: Replies: 13 :: Views: 6853
what is the relation between fsk and OOK with drawing ?????
Digital communication :: 12-06-2012 04:48 :: khos :: Replies: 2 :: Views: 403
Using Agilent 89601a software to do the demodulation of fsk and Bpsk method, I encounter the error of expression in fsk is "fsk error", while that in Bpsk is "EVM". What is the relationship between "fsk error" and EVM, are they the same?
RF, Microwave, Antennas and Optics :: 06-10-2013 05:52 :: sammycxm :: Replies: 2 :: Views: 583
I need to transfer some digital data (like data received by a typical GPS module) to some point say 10Km far from it. Do anybody have useful info or advice? I guess that using digital modulation is recommended, but which one? psk, fsk, Qpsk, or ?
I need it for MS project. Thanks! 8)
RF, Microwave, Antennas and Optics :: 05-09-2004 02:56 :: Manoochehr :: Replies: 6 :: Views: 1223
You will have to put a psk detector at the end of the IF chain in place of the AM detector. It might be easier to use fsk and have a PLL as the fsk detector. If you do need the psk, look up "costas loop' on the web or in a communication theory textbook for circuits.
You could even use on-off keying (...)
Analog IC Design and Layout :: 02-02-2005 00:53 :: flatulent :: Replies: 3 :: Views: 3165
I have a project that relate to FPGA and Matlab.
In this project, i must use Kit UP1 of Alter as a modulation circuit.
The main idea of this project is :
Using Matlab to interface with UP1 via Serial Port.
Matlab will send modulating signal to UP1 Kit
UP1 Kit will process as a modulation block with modulation schemes (AM,FM,ASK, fsk..)
PLD, SPLD, GAL, CPLD, FPGA Design :: 10-23-2006 10:50 :: nghiad85 :: Replies: 4 :: Views: 2036
i have to a project to tranfer data between PCs using sound card. Require data is modulate fsk or psk or HDB3 ... to packet. This is my exercise for data communication and transmission.
Please help me ? using PIC or PC, soft by delphi
Have you some idea?
PC Programming and Interfacing :: 11-01-2006 09:42 :: hivongxanh_dt7 :: Replies: 1 :: Views: 1020
ASK circuits are normally used in very low cost applications where there is little interference, such as in a key fob for opening your car doors.
fsk circuits require much more circuitry, and are therefore more expensive. However, the nature of fsk is such that it can tolerate more interefence noise. So you can get longer range, (...)
RF, Microwave, Antennas and Optics :: 03-28-2007 14:21 :: biff44 :: Replies: 5 :: Views: 1461
we know that the several terms in communication, like (pcm,ppm,pwm),(ask,psk,fsk.......),and(GSM.TDMA,FDMA,CDMA......),whate the different between this.that ican use several terms in on system
Digital communication :: 11-13-2007 11:17 :: haif :: Replies: 3 :: Views: 721
can anybody give me some comparisons of these two options in receiver?
and why in Gfsk zero-IF receiver limiter is not a good choice?( why those low frequency components in Gfsk spectrum cause trouble?)
Analog IC Design and Layout :: 03-25-2008 09:48 :: fanshuo :: Replies: 8 :: Views: 840
Hello dear friends,
I should simulate a wideband M-ary fsk system with an LDI (limiter discriminator integrator) receiver in order to analyze its performance and obtain the relationship between BER and SNR in rayleigh fading channels .
This project should be done with MATLAB. I am not sure if it is possible to use (...)
Digital communication :: 02-12-2010 14:10 :: yashar :: Replies: 0 :: Views: 1127
hello , how are u all
i need help to find matlab code for
fsk modulation & psk & OOK &PRK
and also bit error curve of all modulation above VS SNR
thanks in advance
Digital communication :: 12-26-2010 11:06 :: eng_M :: Replies: 0 :: Views: 878
can someone explain the difference between dpsk and psk please
Digital communication :: 03-29-2011 20:12 :: jess17 :: Replies: 4 :: Views: 6175
i'm new in this.
i have a noise generator module (frequency variation from 2kHz to 16 KHz )and psk module (bandwidth of 10KHz) . Now by using this i want to plot hte Eb/No Vs BER curve pls any one hlep me .
Digital Signal Processing :: 04-29-2011 05:26 :: thamotharak :: Replies: 1 :: Views: 996
digital to analog convertion;
ASK, fsk , psk, QAM,Qpsk?...
Perhaps you should spend a bit more time to formulate a question. Otherwise there is not much motivation to reply to your posting.
Electronic Elementary Questions :: 10-26-2011 03:26 :: LvW :: Replies: 4 :: Views: 1542
i will be very grateful if some one can help me out in resolving the querry that can i replace a mixer with AM incoming signal is already modulated in digital domain (fsk) and is being converted to analog one at about 20 KHz centre frequency.....i need to up-convert that signal to 200 can be done with the help of mi
Professional Hardware and Electronics Design :: 11-22-2011 11:53 :: ngineer :: Replies: 1 :: Views: 905
Please kindly help me~~:cry::cry::cry::cry::-(:-(:-(
Coherent and Noncoherent detection for Mfsk, which needs larger bandwidth???
Assume 4-fsk and binary fsk have same bandwidth, using noncoherent detection,
do they have same bit rate??
I mean: (...)
Digital communication :: 10-31-2013 04:11 :: keygggl :: Replies: 0 :: Views: 239
I have made circuit of fsk and PLL using XR2206 and RC2211, now there are some problems in the output of PLL at high baudrates. The problem is that it is giving logic 0 for logic0 but for logic1 it gives rising wave like capacitor being charged. Is there any meathod to make this rising wave a strainght logic 1 level. Baudrate i am using is (...)
Analog Circuit Design :: 03-19-2005 03:48 :: ss :: Replies: 2 :: Views: 682
Please, can anyone tell me how to estimate the Bit Error Rate (BER) for the
Amplitude Shift Keying (ASK), Frequency Shift Keying (fsk) and Binary Phase Shift Keying (Bpsk) using Matlab? :|
Thank you ver much indeed :D
Digital Signal Processing :: 12-19-2005 16:59 :: Na3noOo3 :: Replies: 3 :: Views: 16236
how Differential Phase Shift Keying is done in digital signal processing
Digital Signal Processing :: 03-26-2006 02:07 :: desaipa :: Replies: 4 :: Views: 3353
how can we connect a rf transmitter module to one8051
and receiver to the other 8051 and transmit/receive data
with a range more than 15 meters
i checked in the net shows fsk and ASK type modules
what's the difference between them?
can we connect the same directly to the microcontroller?
any sample projects (...)
Microcontrollers :: 03-02-2007 02:53 :: microlab :: Replies: 5 :: Views: 1515
can any body plz explain to me that which type of signal will cover more distance: Low frequency signal or high frequency signal?? and why so??
Digital communication :: 02-07-2008 04:06 :: rag_perfect :: Replies: 27 :: Views: 5594
which digital modulation is the best choice for transmitting digital control signals via a wireless link between two points? Qpsk? fsk? other modulations?
RF, Microwave, Antennas and Optics :: 04-20-2008 15:18 :: elec350 :: Replies: 3 :: Views: 705
This is another way of specifying phase jitter. It is usually put in this form for modulations that change the frequency, such as fsk and analog FM.
RF, Microwave, Antennas and Optics :: 05-07-2008 16:48 :: flatulent :: Replies: 1 :: Views: 916
8 bit AVR will find it hard to process fsk or MSK data modulated carrier - try to use AVR32 bit or ARM cortex (M3)
Basically you will need to decode A bi-phase signal using DFT algorithm
Google DFT & Grotzel to learn more
Go to TI site and search for MSP430 there is an fine application note for modem design using fsk (...)
Microcontrollers :: 10-17-2009 09:46 :: bobcat1 :: Replies: 1 :: Views: 896
This sounds like standard frequency modulation.
Try searching for fsk and Afsk. About half the data transmissions in the World use this technique so there is plenty of information out there.
Analog Circuit Design :: 02-03-2010 03:23 :: betwixt :: Replies: 2 :: Views: 522
where did you get the mcrf200?? do you use the fsk reader design by microchip??
RF, Microwave, Antennas and Optics :: 03-08-2010 02:08 :: jeneral_pandeer :: Replies: 2 :: Views: 1117
Most caller ID best on fsk and not DTMF signaling
Use a dedicated IC to decode Caller ID from phone line
The new family f microcontroller best on the COTEX M3 or M0 cand decode the fsk without the need for special IC only line interface
All the best
The microcontroller specialist
Microcontrollers :: 05-01-2010 04:37 :: bobcat1 :: Replies: 3 :: Views: 1025
I am using a caller ID chip which can detect both fsk and DTMF caller IDs on its input there is differential amplifier which we use a protection circuit to connect to it and there are very precise resistors in the input network.
I could run one of these chips some years ago but now I don't have the documents of that design.
Professional Hardware and Electronics Design :: 04-30-2011 22:35 :: taskmn57 :: Replies: 0 :: Views: 1318
I would like to make a question concerning baseband signal processing.
Namely, I am dealing with radio communication inside 434M ISM band. Used modulation is fsk, and symbol rate 19.2kbaud.
The architecture ofthe receiver is following:
USRP1 with tuned to center frequency of 433 MHz and (...)
Digital communication :: 05-24-2013 19:32 :: thranduil :: Replies: 1 :: Views: 319
hi, friends I am new in this forum, but I have my project of simulating an interctive ASK,psk and fsk comunication system using simulink.
but i have do not understand how I can iteract these three communication systems such that user can interactively choose one of the sheme and see the waveforms at each (...)
Digital communication :: 03-28-2010 04:34 :: mmallaba :: Replies: 0 :: Views: 1198
I need your help.
I currently work in the detection of signals with digital modulation, especially psk and fsk signals.
I found the most convenient method for the classification between these two signals is the wavelet transform. I tried to apply it but the problem that the histogram is not what I am looking for.
Can you (...)
Digital communication :: 07-15-2010 15:26 :: Franchiska :: Replies: 1 :: Views: 705