公开(公告)号：FI87417B

公开(公告)日：1992-09-15

申请号：FI884941

申请日：1988-10-26

Applicant: MOTOROLA INC

Inventor： BORTH DAVID EDWARD ,  WANG CHI-FEI ,  RABE DUANE C ,  LABEDZ GERALD PAUL

IPC: H04L27/22 ,  H04B7/185 ,  H04B7/26 ,  H04J3/00 ,  H04L7/04 ,  H04B1/16

公开(公告)号：CA1291280C

公开(公告)日：1991-10-22

申请号：CA576640

申请日：1988-09-07

Applicant: MOTOROLA INC

Inventor： BORTH DAVID E ,  WANG CHI-FEI ,  RABE DUANE C ,  LABEDZ GERALD P

IPC: H04L27/22 ,  H04B7/185 ,  H04B7/26 ,  H04J3/00 ,  H04L7/04 ,  H04B7/212

Abstract: PHASE-COHERENT TDMA QUADRATURE RECEIVER FOR MULTIPATH FADING CHANNELS of the Invention A method and apparatus for phase-coherently demodulating a multipath-impaired time division multiple access QPSK data timeslot is disclosed. A quadrature separator generates multipath-impaired intermediate signals which, during a predetermined synchronizing sequence for the timeslot, are applied to a pair of synchronizing correlators to generate quadrature multipath profiles. These profiles then are used to modify subsequently received QPSK timeslot signals at the separator outputs to coherently construct multipath compensated I and Q channel data.

公开(公告)号：FI884941A

公开(公告)日：1989-06-05

申请号：FI884941

申请日：1988-10-26

Applicant: MOTOROLA INC

Inventor： BORTH DAVID EDWARD ,  WANG CHI-FEI ,  RABE DUANE C ,  LABEDZ GERALD PAUL

IPC: H04L27/22 ,  H04B7/185 ,  H04B7/26 ,  H04J3/00 ,  H04L7/04 ,  H04B

公开(公告)号：FI884941A0

公开(公告)日：1988-10-26

申请号：FI884941

申请日：1988-10-26

Applicant: MOTOROLA INC

Inventor： BORTH DAVID E ,  WANG CHI-FEI ,  RABE DUANE C ,  LABEDZ GERALD PAUL

IPC: H04L27/22 ,  H04B7/185 ,  H04B7/26 ,  H04J3/00 ,  H04L7/04 ,  H04B