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54 Threads found on Fsk Psk
Hi I have just started working on a power line modem design using BELL 202 modulation (fsk 1200/2200 Hz marks space signal). There are quite a few design examples available from different chip manufacturers, e.g. TI, ON Semi etc. but all of these use CENELEC bands (starting from 9kHz, different modulation like OFDM, psk variants etc.) but m
Can any body guide me the difference between average probability of bit error for fsk system and for psk system ??? Why one (fsk) follows Rician probability function and other follows Gaussian density function, concept wise can any body explain this, Plz do guide me. More over what is the minimum input level that the fooster seeley (...)
i want to know that which modulation schemes gives us best result in PSTN network if we use compression algorithms i.e. adpcm for noisy channel. my channel is noisy. i want to use ADPCM for data compression and alone with this i want to check which modulation scheme will perform good (psk, fsk or QAM) plz guide me in better way Regards
Hello all, I have generated digitally modulated signals such as ASK, fsk, psk and I have done feature extraction for all these signals and saved those feature values in the database. Now when the tested signal is one of these signals, How do I set threshold value for these feature values to determine the feature value belongs to which modulation
hi folks, i am having problems in finding literature to learn the very basics of digital communication for example brief descriptions and examples of differences between 1) source encoding and channel encoding 2) bit rate and bandwidth 3) modulation FM, AM and PCM, PAM, etc 4) PCM, PAM and fsk, psk BTW i am an engineer and have some knowl
Hello, I have a set of digital modulated signals (ASK, psk, fsk). I have extracted few features from these signals and saved all these feature values in a feature database. Now if i use decision tree approach to classify these signals based on the extracted features then how to determine the threshold values of these features which would help me
FT is useful when the waveform is deterministic. (one can write an equation or give the value of the wave at any point in time). In psk, fsk etc, the waveform is not predictable, since the modulating binary data is random. So we need to use PSD to find the spectrum info of such a signal. (FT of autocorrelation route) - b
Info on important characteristics of different psk and fsk modulation schemes - need examples. Thanks
hiiiii what are the advantage of ASK over psk and psk?
Hello 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
Is it possible to design the universal modulator which consists ot ask,psk,fsk in verilog or vhdl...?
It seemed to me that there is something wrong in the words "binary noncoherent fsk" in the problem. If we substitute that by "binary coherent psk", and maximum data rate of 1.2 kbits/s instead of 2.4 kbits/s, it makes sense. In which context is the problem proposed? Nevertheless, like Lomaxe, I don't like paragraph (b). Regards Z
What is the difference between PCM and other modulation techniques like psk, fsk etc... I understand how they are done, but my question is where do they fit in communication system. lets say we have binary sequence we can use PCM and transmit it..then why do we need other keying techniques. do we something have to do with baseband abd bandpass modu
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.
why phase shift keying (psk) is often used for DS-SS whereas frequency shift keying (fsk) is used for FH-SS?:!:
56064 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.
I need to implement an algorithm for automatic modulation recognition using matlab. I am planning to do this by using pattern recognition, I have read about the decision tree approach, it says to "ideniify the constant envelope signals (CW, FM, fsk). psk sigals are not considered as constant envelope signals, since in practice they are band-limit
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
Hello guys I have been reading on fsk , psk and ASK and have been asked to produce a graph ( attached ) by writing few lines of Matlab code.. :| Could any one possibly tell me how to get started on this please? Thanks guys
Hello all, 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 help me