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Message
From: prakash muthukumar<mail2pr03@y...>
Date: Fri Mar 16 09:33:10 CET 2007
Subject: [oc] radix 4 complex fft by ZHAO Ming
We have used the radix 4 complex fft by ZHAO Ming ( cfft project ).
It seems to work fine, but our simulators (ModelSim and ISE sim) give
really a lot (1000's) of identical warnings.
ISE sim gives:
Warning: There is an 'U'|'X'|'W'|'Z'|'-' in an arithmetic operand,
the result will be 'X'(es).
I traced it back to cfft4.vhd, where signal RegAI is used in the case
statement without being initialized properly (that is not all
components are initialized in each case.
Also,I cannot understand how you have implemented 64 point fft for OFDM.
please do explain me in detail.
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