DSP

signal in time-frequency domain
1.If signal in time domain is infinite ,it must be finite in frequency domain, vice versa. 2.If signal in time domain is infinite, it must be infinite in frequency domain,vice versa. How to prove them? Which articles/textbooks implemented that? Do not just give a example to deduct them,I require a proof of theo... 19 Jan 2010 23:38

Wiener-Kitchen Theorem
If a sausage is brown then it's cooked if it's black it's f*cked. Hardy ... 18 Jan 2010 14:15

Rake receiver's tap delay in CDMA
Hi, In website" "http://www.wirelesscommunication.nl/reference/chaptr05/cdma/rake.htm" They said: "The Number of Resolvable Paths The order of diversity achieved by the rake receiver depends on the number of resolvable paths L with Tmax L = round(------) + 1 Tchip where Tm... 17 Jan 2010 21:43

phase of sinc function outside the main loop
I am a little confused by the phase diagram of the sinc function outside the main loop. I wrote a small demo program where I plot the magnitude spectrum and the phase spectrum of the sinc function. I used Mathematica Arg[] function for the phase diagram. For the main loop, the phase is zero. Then the phase ... 19 Jan 2010 03:33

filtering random processes
Let's assume on an input of the passband filter there is a complex white noise. As on known spectral density on an input it is possible to calculate noise level on an output of the passband filter? %================================================================= clear all fd=1000; sko=95; N=2^16; t=0:1/f... 17 Jan 2010 15:01

Innovative DSP based Product that you wish to design : What would it be?
Dear Friends, Let me post one interesting topic on this forum, Lets see, you are given a chance to design your "Dream DSP based product" which you wish to see and use in your lifetime, what would it be? Regards Bharat ... 15 Jan 2010 22:42

branch cuts in the way
Hello I have run into the following real life problem. I am measuring the complex exponentials exp(i.w_k.a.t) for some fixed and given 'a' and given set of values 'w_k' and all 't', (actually we are measuring cos(w_k.a.t) and sin(w_k.a.t) simultaneously) in independent noise whose standard deviation is <0.01, ... 15 Jan 2010 23:49

Allpass phase-matching
I am wondering if anyone has a good program for achieving an arbitrary desired phase response with a cascade of allpass filters (either 1st or 2nd-order). I've begun writing a gradient-search algorithm but I'm thinking it's already been done. Thanks for any pointers. Bob Adams ... 17 Jan 2010 21:43

Newbie: Need coefficients for a linear-phase FIR filter
I'm implementing an algorithm for detecting heartbeats within an EKG signal. There is an initial filtering pass that is described in the paper like this: "In our implementation a 27 tap linear phase FIR filter is used. The cut-off frequencies are 18 Hz and 35 Hz." Our data is sampled at 256 Hz. I know this shoul... 14 Jan 2010 15:46

How to generate 15 consecutive
>On Wed, 13 Jan 2010 02:23:24 -0600, Laron wrote: Hi, In CDMA IS-95 standard, we should insert one zero after 14 consecutive "0" in I/Q short PN sequence under SR1 with length cycle 2^15,so as to generate "1000..(15 consecutive zeros)". Using LFSR, is there any convenient way to... 14 Jan 2010 11:14