Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
Hi everyone,
I have an assignment to analyse performance of adaptive modulation and I am reading literature that are available so far.
I read in a paper that the average channel power gain can be assumed to be 1 with appropriate scaling of average transmit power.
Is anyone familiar with this...
Hi,
Anyone has a code for adaptive modulation in wireless communication? I need to produce the BER vs SNR grapgh for QAM with adaptive values of M...
Anyone knows of MATLAB code for this?
Thanks
Re: Minimum SNR required
Hi,
I have a reference on te SNR requrement for different BER requirements for different modulation scheme. a page of 'Degrees of freedom in adaptive modulation' by A. Goldsmith is attached
I have a different issue on this area, I follow the equations as given in the...
I see! THANK YOU!!! So that's how the complex number represents the Amplitude and phase of each of M signals?
And that signal is the result after M-QAM right?
i understand that part of modulation, what i meant was the complex number representation of each symbol...
as for the MATLAB simulation, hmod = modem.qammod(16);
tx = randint(500,1,16); % producing random numbers to be transmitted
qamSig = modulate(hmod,tx);
the result of modulation, qamSig is...
I understand that it is analog signal that is sent between antennas ( for wireless communications) but sometimes the bits (after modulation, take M_QAM for example) are represented by complex number (mapping of constellation)
Scaling factor in QAM
and there is MATLAB function that produce...
Hi all, i have read so much about digital modulation M-QAM, where bits are converted to symbols and sent through the channels. But i am not clear on the transmission of the 'symbols' itself, for example from the bock diagram below, the streams are modulated by sin n cos signal and then sent...
Hi BradtheRad,
Are you referring to frequency modulation here?
I am also confused with transmission of bits through radio channels, after the bits are converted to symbols, how are the symbols transmitted in the air as analog signal? Or if my understanding there is wrong please correct me...
HI, i am studying Sliding mode control to use for my project, and when i read this paper, i found this
notation that i am not familiar with. Attached is the article i am talking about. Will anyone be able to tell me what it is exactly:
(d/dt+lambda)^(n-1) x(t) ?
Thank you
Re: MMSE in matlab???
HI, I am having a project on MMSE too, I need to estimate the covariance matrix, and i don't know the value of channel variance, how do i get this value? Please someone help me.... thank you
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
