| 摘要 |
A system for characterizing phase modulated signals, e.g., pi /4 DQPSK signals, includes a time interval analyzer coupled to a system processor for determining a variety of signal characterizing parameters as a function of readings made on a phase modulated signal by the analyzer. The system processor includes a phase/frequency determining section for generating a phase deviation curve and decoding the modulated signal. The system processor further includes a processing section for determining various signal defining parameters including origin offset and I/Q mismatch as a function of the phase deviation.
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