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Linear-phase DC Removal Filter

This blog describes several DC removal networks that might be of interest to the dsprelated.com readers. Back in August 2007 there was a thread on the comp.dsp newsgroup concerning the process of re...

posted by Rick Lyons on Mar 30 2008 under Tips and Tricks
Comments (2) |

Correlation without pre-whitening is often misleading

White Lies Correlation, as one of the first tools DSP users add to their tool box, can automate locating a known signal within a second (usually larger) signal. The expected result of a correlation i...

posted by Peter Kootsookos on Feb 18 2008 under Matlab | Basics | Tips and Tricks
Comments (2) |

Handling Spectral Inversion in Baseband Processing

The problem of "spectral inversion" comes up fairly frequently in the context of signal processing for communication systems. In short, "spectral inversion" is the reversal of the ...

posted by Eric Jacobsen on Feb 11 2008 under Tips and Tricks | Wireless | Communication
Comments (1) |

Resolving 'Can't initialize target CPU' on TI C6000 DSPs - Part 2

Configuration The previous article discussed CCS configuration. The prerequisite for the following discussion is a valid CCS configuration file. All references will be for CCS 3.3, but they may be use...

posted by Mike Dunn on Nov 12 2007 under TMS320C6x | Basics | Tips and Tricks
Comments (0) |

Spectral Flipping Around Signal Center Frequency

Most of us are familiar with the process of flipping the spectrum (spectral inversion) of a real signal by multiplying that signal's time samples by (-1)n. In that process the center of spectral rotat...

posted by Rick Lyons on Nov 7 2007 under Tips and Tricks | Multirate DSP
Comments (2) |

A Differentiator With a Difference

Some time ago I was studying various digital differentiating networks, i.e., networks that approximate the process of taking the derivative of a discrete time-domain sequence. By "studying" ...

posted by Rick Lyons on Nov 3 2007 under Tips and Tricks
Comments (1) |

A brief look at multipath radio channels

Summary: Discussion of multipath propagation and fading in radio links Radio channels, their effects on communications links and how to model them are a popular topic on comp.dsp. Unfortunately, for m...

posted by Markus Nentwig on Oct 31 2007 under Basics | Tips and Tricks
Comments (7) |

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 Matlab ...

posted by Markus Nentwig on Sep 22 2007 under Matlab | Basics | Tips and Tricks
Comments (15) |