Title:
DATA SYMBOL MAPPING AND SPREADING EQUIPMENT FOR MOBILE COMMUNICATION SYSTEM
Document Type and Number:
Japanese Patent JP2004201306
Kind Code:
A
Abstract:
To provide a data symbol mapping and spreading equipment for a mobile communication system that can improve the efficiency of the mobile communication system by handling a data symbol mapping and spreading process in binary operation instead of complex number operation when performing QPSK (Quadrature Phase Shift Keying) modulation in a mobile communication time division duplex mode TDD (Time Division Duplex).
The data symbol mapping and spreading equipment maps and spreads a data symbol by binary operation when performing QPSK modulation in mobile communication Time Division Duplex.
Inventors:
CHANG SEOK IL
Application Number:
JP2003413994A
Publication Date:
July 15, 2004
Filing Date:
December 11, 2003
Export Citation:
Assignee:
LG ELECTRONICS INC
International Classes:
H04B1/707; H04J13/20; H04L25/03; H04J11/00; (IPC1-7): H04B1/707
Attorney, Agent or Firm:
Hidesaku Yamamoto
Takaaki Yasumura
Natsuki Morishita
Takaaki Yasumura
Natsuki Morishita