### Shahbaz Khan (@szak1592)

I have a Master's degree in Electrical Engineering specializing in Digital Systems and Signal Processing. I am interested in DSP, signal processing for communication systems, estimation theory and statistical signal processing.

## Re: Filtering a white noise process in MATLAB to generate shadowing/fading?

Hi Rick!Well...it's a bit comforting to know that the author whose book I read in undergrad is also puzzled. :)

## Re: Filtering a white noise process in MATLAB to generate shadowing/fading?

Hi MichaelRW, thanks for your answer and for writing the code for me. But the book's text (section 2.7) and exercise problem 2.20 both state that we need to pass...

Hi everyone!I am solving a computer exercise in Andrea Goldsmith's Wireless Communication book. The problem statement is: "the simulation first generates a white...

## Re: Simulating higher order all-pass filters in matlab?

Hi Rick,Thanks for your guidance and lessons. I've learned a great deal from this post. Thank you.I hope you get some time for the sink problem soon. :)

## Re: Simulating higher order all-pass filters in matlab?

Hi Rick,At least there's something new I learned from all this, esp. since you experimented with other b's and a's and still ended up with the same problem when...

## Re: Simulating higher order all-pass filters in matlab?

Hi Rick, It seems like I have figured it out (OR made a fool of myself, I'll let the grown-ups decide). As suggested by drmike, I used MATLAB's second order sections...

## Re: Simulating higher order all-pass filters in matlab?

Hi Rick,I'll run your code.But this imperfection would mean that even designing second order sections and cascading them won't work because the sections would have...

## Re: Simulating higher order all-pass filters in matlab?

I am just attempting this DSP semester project on MIT's site (I mentioned it in one of my replies above) and one of the tasks is to have such a filter and notice...

...

## Re: Simulating higher order all-pass filters in matlab?

Hi Mike,So it seems that is the only thing left to try. I'll try to do that and see if it works.

## Re: Simulating higher order all-pass filters in matlab?

Hi Rick,I did the same before posting the problem here. I tried N = 2 and N = 3 and things were okay but when I tried N = 10, I got crazy results.The coefficients...

## Re: Simulating higher order all-pass filters in matlab?

The reason I used convolve is that say I have a polynomial (x+1) and I wanna raise it to the second power, then the way to do that is to convolve x with itself....

## Simulating higher order all-pass filters in matlab?

Hi everyone. I am attempting to implement a higher order all pass filter of the form in MATLAB. The filter coefficients b and a are given byb = [0.5314, -3.1345,...

## Re: What papers should beginners in signal processing research read?

Thanks Rick. Hopefully I'll find some, if not all, of these articles to be readable.

## Re: What papers should beginners in signal processing research read?

Hi Rick Lyons,Yes, this w_sub_k is undefined. Actually you have to go through all the steps, meaning that for a different K (the authors showed the derivation for...

## Re: What papers should beginners in signal processing research read?

Comparing the effort/cost involved in explaining the "obvious" versus the effort/time spent by new researchers in understanding the "obvious", I think authors should...

## Re: What papers should beginners in signal processing research read?

So basically unless you have a PhD plus a few years of post PhD experience, you are doomed.

## What papers should beginners in signal processing research read?

I know that papers these days build up on a lot of literature and hence are very compactly written. There is also the issue of page limits. I've heard that papers...

## Re: Choosing the DFT size to match linear convolution in overlap save method?

So using all the helpful comments, I have figured out the problem. The problem with the initial samples was that I was not doing that step out of laziness, but Sanjit...

## Re: Choosing the DFT size to match linear convolution in overlap save method?

Thanks. Yes, zero padding at the beginning is what I was referring to. But I wasn't aware of the zero padding at the end. I'm replying from my phone and I haven't...

## Re: Choosing the DFT size to match linear convolution in overlap save method?

JBrower, you are right about Rick's comments - helpful as always. I shouldn't have used a random input, rookie mistake!My code works fine except for the starting...

## Re: Choosing the DFT size to match linear convolution in overlap save method?

Thank you, Rick Lyons. This is very helpful. I'll go through it, see where I went wrong and how I can modify my code accordingly. Thanks.

## Choosing the DFT size to match linear convolution in overlap save method?

I am studying DFT from S.K.Mitra's book and I am now trying to write MATLAB code for the overlap save method (a.k.a overlap discard). It works just the way it should...

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