Method for measuring frequency shift in digital communications u

Details Method for measuring frequency shift in digital communications u Method for measuring frequency shift in digital communications u

1997-02-19

1999-11-30

Chin, Stephen

Pulse or digital communications

Synchronizers

Frequency or phase control using synchronizing signal

H04L 700

Patent

active

059955724

ABSTRACT:
In a process for demodulation of a received signal that contains, in addition to data to be transmitted, a preset synchronization sequence, the following is done to estimate a frequency shift. At least two nonoverlapping partial sequences of the synchronization sequence are picked off. Using a least-square process, the coefficients of the channel step response at each observation window are determined. The frequency shift, in the form of a phase rotation per symbol, is then estimated.

REFERENCES:
patent: 5233632 (1993-08-01), Baum et al.

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