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Curse you, iPython Notebook!
First, I think ipython is great. I use it daily and always have an ipython terminal open. But just recently, I was showing off the ipython 0.12 notebook and in the process created a ...
posted by Christopher Felton on May 1 2012 under Basics | Python Comments (0) |
Python scipy.signal IIR Filter Design
Introduction The following is an introduction on how to design an infinite impulse response (IIR) filters using the Python scipy.signal package. This post, mainly, covers how to use the scipy.signa...
posted by Christopher Felton on May 13 2012 under Basics | Python Comments (0) |
Instant CIC
Summary: A floating point model for a CIC decimator, including the frequency response. Description: A CIC filter relies on a peculiarity of its fixed-point implementation: Normal operation involves... 
posted by Markus Nentwig on May 8 2012 under Matlab | Basics | Tips and Tricks Comments (3) |
Delay estimation by FFT
Summary: The delay between a signal and a reference appears in the frequency domain as linear phase shift. It can be estimated with subsample accuracy using FFT methods.This article provides a ...
posted by Markus Nentwig on Sep 22 2007 under Matlab | Basics | Tips and Tricks Comments (23) |
Pulse Shaping in Single-Carrier Communication Systems
Some common conceptual hurdles for beginning communications engineers have to do with "Pulse Shaping" or the closely-related, even synonymous, topics of "matched filtering", "... 
posted by Eric Jacobsen on Apr 10 2008 under Basics | Wireless | Communication Comments (29) |
Polyphase filter / Farrows interpolation
Hello, this article is meant to give a quick overview over polyphase filtering and Farrows interpolation. A good reference with more depth is for example Fred Harris' paper: http://www.signumconce...
posted by Markus Nentwig on Sep 18 2007 under Basics Comments (11) |
Instantaneous Frequency Measurement
I would like to talk about the oft used method of measuring the carrier frequency in the world of Signal Collection and Characterization world. It is an elegant technique because of its simplicity. Bu... 
posted by Parth Vakil on Feb 4 2008 under Matlab | FPGA | Basics Comments (18) |
A Fixed-Point Introduction by Example
Fixed-point is used to represent fractional numbers of finite-word length. Fixed-point is an interpretation of a 2's compliment number usually signed but not limited to sign representation. &nbs...
posted by Christopher Felton on Apr 25 2011 under FPGA | Basics Comments (12) |
Design study: 1:64 interpolating pulse shaping FIR
This article is the documentation to a code snippet that originated from a discussion on comp.dsp. The task is to design a root-raised cosine filter with a rolloff of a=0.15 that interpolates to 64x...
posted by Markus Nentwig on Dec 26 2011 under Matlab | Basics | Multirate DSP Comments (5) |
Frequency Dependence in Free Space Propagation
IntroductionIt seems to be fairly common knowledge, even among practicing professionals, that the efficiency of propagation of wireless signals is frequency dependent. Generally it is believed that lo...
posted by Eric Jacobsen on May 14 2008 under Basics | Wireless | Communication Comments (4) |
