Google Answers: QPSK Demodulation

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Q: QPSK Demodulation ( No Answer, 0 Comments )

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Subject: QPSK Demodulation
Category: Science > Math
Asked by: alkaloid-ga
List Price: $100.00

Posted: 02 Aug 2005 06:36 PDT
Expires: 02 Aug 2005 12:37 PDT
Question ID: 550771

How does one demodulate an incoming QPSK (full-rate) digitally encoded
waveform using C/C++ when  given 10,000 I and Q values?  The specific
application for this is finding the start point sequence in a TDMA
signal coming from a cell tower base station.  Start point needs to be
found so that one might synchronize with the TDMA time slots in order
to pick a specific MS and monitor its bursts.  It is not feasible at
this time to use DSP hardware; everything needs to be done using
C/C++.

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