Phase-noise compensated digital communication receiver and metho

Details Phase-noise compensated digital communication receiver and metho Phase-noise compensated digital communication receiver and metho

1999-03-22

2000-11-21

Tse, Young T.

Pulse or digital communications

Receivers

Angle modulation

375344, 329307, H04L 2706

Patent

active

061513687

ABSTRACT:
A phase-noise compensated digital communication receiver (40, 40', 40") includes a carrier tracking loop (56) which imposes a transport delay on a carrier tracking loop signal (60) before that signal (60) is fed back upon itself. The carrier tracking loop (56) includes a phase rotator (58) that rotates a down-converted digital communication signal (50) by a phase determined by a phase-conveying signal (72). A carrier tracking loop signal is obtained from the carrier tracking loop and delayed in a delay element (82) by a duration that compensates for the transport delay. A phase rotator (84) then rotates the delayed carrier tracking loop signal through a phase value determined by the phase-conveying signal (72) to obtain an open-loop phase signal (86) from which data are extracted. Different embodiments of the receiver (40, 40', 40") are provided to accommodate adaptive equalizer (54) issues.

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Thomas Alberty and Volker Hespelt, "A New Pattern Jitter Free Frequency Error Detector", The IEEE Transactions on Communication vol. 37 No. 2, Feb. 1989, pp. 159-163.

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