Filtering of the higher frequency terms.
- To: mathgroup at smc.vnet.net
- Subject: [mg119232] Filtering of the higher frequency terms.
- From: Srinath Byregowda <sbyregow at asu.edu>
- Date: Wed, 25 May 2011 19:32:44 -0400 (EDT)
Hello Group, I had a favor to ask. I am working on reducing the terms of a nonlinear transmitter model. The equation has thousands of terms, in which I need to remove the higher frequency terms. The terms have "w" in them which is the higher frequency and "w1" and "w2" which are the lower frequency terms. I have written a perl script to delete all the terms that have w in them. And the script is working fine. However, there are some terms such as (G^2 Sin[ptx + (t - td) w - (-rtx + t) w1 - (-rdtx - rtx +t) w2 - wt])/(4 K^2). Terms like these are being deleted but I do not want them to be deleted because +wt and -wt will actually get cancelled and its lower frequency term.. I want to know if there is a command simplify the parameters inside the brackets of Sin expression. Any help would be greatly appreciated. Thanks, Srinath