How do I apply a ramp-down filter without affecting the symbol?
- From: "Mr. Ken" <Mr. Ken@asdf>
- Date: Mon, 12 Jun 2006 10:42:48 +0800
I am designing a QAM64 transmitter with waveshaping. There is a requirement
to
trim down signal levels to zero in the final symbol. What are the methods to
do so?
Previous version of the design used a linear ramp-down (saw-shape) which
scales
down the final symbol to zero, but it affects the final symbol badly.
Are there any better methods?
.
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