HFA3860 Datasheet, PDF (18/40 Pages) Intersil Corporation – 11 Mbps Direct Sequence Spread Spectrum Baseband Processor

HFA3860
The other signal quality measurement is based on phase
noise and that is taken by sampling the correlator output at the
correlator peaks. The phase changes due to scrambling are
removed by differential demodulation during initial acquisition.
Then the phase, the phase rate and the phase variance are
measured and integrated for 16 symbols. The phase variance
is used for the phase noise signal quality measure (SQ2). Low
phase noise means a stronger received signal.
The antenna with the best phase noise is chosen when dual
antennas are implemented.
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