DSP

Selecting the best coding scheme
Hello All Given the task to design a receiver which should operate reasonably well under moderate to severe channel conditions, which coding scheme you will select from hardware implementation point of view: Turbo code or LDPC? Your opinion matters a lot. Chintan ... 5 Aug 2010 12:25

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Removing a window function (any ideas?)
Say I have a signal x(t) and a window w(t). I multiply the two signals together, y(t)=x(t)w(t) and take the Fourier transform to form Y(f). Now say I apply a linear phase to Y(f) such that Y'(f) = exp(-jwD)Y(f) where D is an unknown. Now assume that x(t), D, and Y(f) are both unknown, while w(t) and Y'(f) are known... 2 Aug 2010 15:50

DSP Libraries using C
Hi, Are there any free DSP Libraries, not necessarily open source which can be used with C. regards shekhar ... 2 Aug 2010 14:44

SPEECH codec
Hi, can you suggest a freely available speech codec which supports a sampling frequency of 20KHz. It should have both encoder and decoder, with as low memory foot print as possible regards, srikanth ... 2 Aug 2010 10:18

Frequency Compression
Hi All, Please help me learn more about Frequency Compression. I know the basic concept, but don't know how to achieve it technically. So any material or links which deals with the technical aspects of Frequency compression is welcome. thanks in advance. regards, srikanth ... 2 Aug 2010 02:45

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Writing equations representing a block diagram
Hello, please help me learn the way to write equations for a block diagram, that I have for a communication system. The block diagram is shown in the figure http://i29.tinypic.com/2yyppnr.gif I believe the model is quite simple but I am willing to explain the model, if it is required. Actually, I ... 3 Aug 2010 15:50