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DSP blog
I'm maintaining a blog on dsprelated.com.Below a short summary of the articles:
Polyphase filter and Farrows interpolation:_
Changing the sample rate by an arbitrary and possibly nonrational factor
Delay estimation by FFT:_
Sometimes the exact position of a known signal needs to be determined in time.
FFT methods can achieve much higher accuracy than what could be achieved with brute-force oversampling and crosscorrelation alone (the example gives an error of
of a sample length). See also this page. A brief look at multipath radio channels:_
With few exceptions, modern ground-based wireless systems such as cellular are designed to achieve good performance in the presence of a fading radio channel.
This article gives a demonstration of multipath propagation, the radio frequency effect that cause frequency-selective fading.
© Markus Nentwig 2007-2008
The content of this page is provided without any warranty and may not be reproduced without permission.