### Simon (@simonzz)

Embedded Systems and FPGA Engineer

## Re: pipelining iir filters

Digital Signal Processing with Field Programmable Gate Arrays by Uwe Meyer-Baesehas a section (4.4.2 in 3rd Ed.) dedicated to Clustering method and Look-Ahead Pipelinening....

## Re: Practical digital communications book

Hello guys, Thak you all for your participation. My goal was to find, if possible, a book with the same U. Meyer Baese's approach.After a deeper search which...

## Practical digital communications book

Hi all,I am trying to gain more practical experience in DSP for digital communications and SDR with FPGAs and programmable devices (I am not new to embedded systems...

## Re: DSP diagramming software?

You can also use FidocadJ: http://darwinne.github.io/FidoCadJ/index.htmlIt can export to PNG, JPG, PDF, PGF or EPS (for LaTeX).I use it for many block-based schematics,...

## Re: MATLAB simulation of bilinear transformation

Hello @neirobert, You are right. The butter function already uses the bilinear transformation.https://es.mathworks.com/help/signal/ref/butter.htmlI completely missed...

## MATLAB simulation of bilinear transformation

Hello,I am trying to simulate an IIR Butterworth filter using low-pass to band-stop and then using bilinear transformation and I am a little bit confused about the...

## Re: Fast C or C++ library for matrices convolution / filtering ?

Thank you @csuresh. I am going to take a look at it.Simon

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## Re: Fast C or C++ library for matrices convolution / filtering ?

Hello @jbrower,I have tried OpenCV but I am looking to something faster than that (if possible).If I don't end up with an alternative solution, it's probable that...

## Re: Fast C or C++ library for matrices convolution / filtering ?

Thank you @napierm, I didn't know VOLK libs.

## Fast C or C++ library for matrices convolution / filtering ?

Hi, I am working on a image processing software, and it needs to compute filtering very frequently, typical frame size is greater than 1 M pixel.I know that there...

## Re: OFDM, suppressed carriers and useful data symbol rate

Thank you @Slartibartfast, now it's all clear.Regards,Simon

## OFDM, suppressed carriers and useful data symbol rate

Hello,I am studiyng #OFDM modulation and I think it's not quiet clear to me how to correctly set up the $$T_\text{ofdm}$$ value when we have suppressed carriers,...

## Re: Digital Modulation Methods

You have 8 possible complex values, the in-phase signal corresponds to the real part and quadrature signal to the imaginary part.The decoding symbol decision will...

## Re: Differential encoder simulation

Thank you too @oliviert.Regards,Simon

## Re: Differential encoder simulation

Of course I agree with you. This was another little doubt I had.Thank you Jeff.Regards,Simon

Hello @stephaneb, Thank you for this guide.I want to suggest a preview button when posting, of course it should be helpful.Regards,Simon

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## Differential encoder simulation

Hello,I am studying the following differential encoder:where the quantizer is defined as $$Q(y) = \text{sgn}(y)$$and I would like to be sure I understand it correctly,...

## Re: Book tips for "control systems"

Modern Control Engineering by Katsuhiko Otaga:https://www.amazon.com/Modern-Control-Engineering-...For something cheeper look at Dovers'book.

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