Title:
DATA TRANSMITTER AND METHOD OF RESTORING DATA DISPLAYED BY TRANSMITTED SIGNAL POINT
Document Type and Number:
Japanese Patent JPH04275747
Kind Code:
A
Abstract:
PURPOSE: To use the generalized partial response signal(GPRS) technique for a communication system for compensating the interference between symbols. CONSTITUTION: Signal points indicating data to be transmitted are selected from a signal constellation (signal arrangement). The signal constellation contains a plurality of signal points which are regularly arranged in a polygonal area having four or more sides. The selected signal points are encoded (pre- encoded) by means of a transmitter in accordance with the GPRS technique. Since the used signal constellation is specially selected, the signal points pre- encoded for transmission occupy the same area as the polygonal area.
Inventors:
RII FUAN UEI
Application Number:
JP32667991A
Publication Date:
October 01, 1992
Filing Date:
November 15, 1991
Export Citation:
Assignee:
AMERICAN TELEPHONE & TELEGRAPH
International Classes:
H04L27/00; H04L25/03; H04L25/497; H04L27/34; H04L27/36; H04L27/38; (IPC1-7): H04L27/00; H04L27/36; H04L27/38
Other References:
IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS=1989US
Attorney, Agent or Firm:
Hirofumi Mimata