Method of compensating phase shift keying frequency offset

Details Method of compensating phase shift keying frequency offset Method of compensating phase shift keying frequency offset

1994-12-22

1996-12-24

Tse, Young T.

Pulse or digital communications

Receivers

Angle modulation

375279, 375344, 329304, H03D 300

Patent

active

055880266

ABSTRACT:
A frequency offset compensation method has the steps of raising the detected signal to the M-th power to remove a modulation factor from the received signal, and accumulating the M-th power signals for N (N is an integer) symbols to derive a phase component of the accumulated M-th power signals. Then, the derived phase component is divided into M so as to obtain an estimation value with respect to phase shift due to frequency offset which represents frequency deviation from a true carrier frequency contained in the received signal, and the received signal is multiplied by the obtained estimation value in a form of conjugate complex number to remove the phase shift due to the frequency offset from the received signal.

REFERENCES:
patent: 4652834 (1987-03-01), McAdam
patent: 4675882 (1987-06-01), Lillie et al.
patent: 4941155 (1990-07-01), Chuang et al.
patent: 5173663 (1992-12-01), Ichiyoshi
patent: 5255290 (1993-10-01), Anvari
patent: 5263196 (1993-11-01), Jasper
patent: 5282228 (1994-01-01), Scott et al.
Publications "Binary Phase-Shift Keying", pp. 245-251, and M-ary Signaling pp. 286-299.
IEEE Journal on Selected Areas in Communications, vol. SAC-5, No. 5, Jun. 1987. "Highly Efficient Digital Mobile Communications With A Linear Modulation Method" pp. 890-895.
IEEE Transactions on Vehicular Technology, vol. 41, No. 1, 1992. "Nonredundant Error Correction Analysis and Evaluation of Differentially Detected .pi./4--shift DQPSK Systems in a Combined CCI and AWGN Environment", pp. 35-48.
Institute of Electronics and Center for Telecommunications Research, Taiwan: "Timing Recovery Techniques for Digital Cellular Radio with .pi./4--DQPSK Modulation" pp. 0319-0323.
Publication: "On the Implementation and Performance of Single and Double Differential Detection Schemes; by Marvin K. Simon, and Dariush Divsalar", IEE Transactions On Communications, vol. 40, No. 2, pp. 278-291, Feb., 1992.

Affiliated with

Also associated with

Rating

Method of compensating phase shift keying frequency offset does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of compensating phase shift keying frequency offset, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of compensating phase shift keying frequency offset will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1184056