Recent content by khurram usman

I will try to explain the issue I am having as clearly as possible without going into my coding or maths. I have my own and a MATLAB Central implementation pf standard LMS in MATLAB. Fixed step size. No normalization or other stuff. I am trying to use it in a system identification setup. I...

Your reply is helpful. But unwrapping comes after I have removed the DC or the constant term. Because otherwise the phase of the whole thing itself stays small if the constant term is large in magnitude. It does not make sense to take the phase of the whole thing. I somehow need to get rid of...

Well removing the mean will most probably not work because there is no guarantee that the exponential is going to an integer number of cycles. That will bias the mean. FFTs might work. I thought a little about using it. Don't have any idea about using autocorrelation. Expand on these two points...

Please read by reply just above this post. No noise doesn't increase proportionally wioth the exponential amgnitude. Its just that i am not operating at high SNRs and when i extract the phase after differencing as described above its not very reliable. It jumps around a lot due to which...

No i don't have any data as such. I have my own simulation setup. But the end result of the simulation from which i am trying to compute the frequency is the model i described above, that is a constant + complex exponential + white noise (most probably white noise). I can provide a brief...

Hi everyone, I am working on some problem relating to radars. The problem boils down to finding the frequency of the complex exponential in a constant + complex exponential + noise model. I found some papers on sinusoid recognition but they use the sinusoid + noise model only. I tried to come...

Thank you very much. I can see what you are trying to convey. So the way i am thinking that changing the limits from 0 to infinity and introducing initial conditions in Fourier just like in laplace will be in sync with all the mathematics? Also if possible then please provide me some example. i...

i have read many of the answers and explanations about the similarities and differences between laplace and Fourier transform. Laplace can be used to analyze unstable systems. Fourier is a subset of laplace. Some signals have Fourier but laplace is not defined , for instance cosine or sine...

i think that the second version is wanted. how did you get this huge number? i was thinking that we have 45 objects and we have to divide them into three groups. we have to find the total number of such groups. so we have 45 objects and we have to insert 2 sticks in between essentially...

A group of 45 Computer Science students at a particular University had to take their first Discrete Mathematics course in the Autumn, Winter or Spring quarter of their Freshman year. How many possible ways were there for this group to meet this requirement? i came across this question on...

what i meant was that the book considered the observer to be stationery and the pendulum moving and found out that the moving time (3.0s) was less than that measured by the stationery observer(9.57s). now i am saying that the motion between the two is relative. what if i say that i want to see...

ok i get your point. both situations are correct but only for me and the other for the other frame. but then why in the question about the pendulum the book takes the pendulum to be moving with .96c and the observer to be at rest.? i could have done the same question by keeping the observer...

okay i understand what you mean by proper time. you mean to say that i am sitting at the origin of the frame and the pendulum starts its oscillation from my right and then ends it there that is at the same position. but i still do not understand the situation that i posted. i mean that i being...

i just started studying special theory of relativity and am confused a lot. its first consequence,that is moving clocks run slow confuses me a lot. if two events happen then the time difference between them as measured by a clock in a frame moving at .9c would be lesser than the time measured by...

i am doing a project from my introductory CS course. i am to make game available online by the name of air transporter. (if possible do check it out online before giving me any ideasa. http://www.physicsgames.net/game/Air_Transporter.html) frankly speaking i do not know all the ropes of matlab...