公开(公告)号：DE10027216A1

公开(公告)日：2001-02-01

申请号：DE10027216

申请日：2000-05-31

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： BANG SEUNG-CHAN ,  KIM TAE-JOONG ,  KIM JAE-HEUNG ,  KIM JUNG-IM ,  CHAE JONG-SUK ,  LEE HYUCK-JAE ,  SHIM JAE-RYONG ,  LEE NARM-HEE

IPC: H04L27/20 ,  H04B1/707 ,  H04J11/00 ,  H04J13/12 ,  H04J13/20 ,  H04J13/02 ,  H04B7/216

公开(公告)号：DE10027216B4

公开(公告)日：2008-10-16

申请号：DE10027216

申请日：2000-05-31

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： BANG SEUNG-CHAN ,  KIM TAE-JOONG ,  KIM JAE-HEUNG ,  KIM JUNG-IM ,  CHAE JONG-SUK ,  LEE HYUCK-JAE ,  SHIM JAE-RYONG ,  LEE NARM-HEE

IPC: H04L27/20 ,  H04B1/707 ,  H04B7/216 ,  H04J11/00 ,  H04J13/12 ,  H04J13/20

公开(公告)号：HK1033522A1

公开(公告)日：2001-08-31

申请号：HK01104144

申请日：2001-06-15

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： BANG SEUNG-CHAN ,  KIM TAE-JOONG ,  KIM JAE-HEUNG ,  KIM JUNG-IM ,  CHAE JONG-SUK ,  LEE HYUCK-JAE ,  SHIM JAE-RYONG ,  LEE NARM-HEE

IPC: H04L27/20 ,  H04B1/707 ,  H04J11/00 ,  H04J13/12 ,  H04J13/20 ,  H04Q ,  H04B

公开(公告)号：GB2352944B

公开(公告)日：2004-02-11

申请号：GB0013114

申请日：2000-05-31

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： LEE HYUCK-JAE ,  KIM JAE-HEUNG ,  SHIM JAE RYONG ,  CHAE JONG-SUK ,  KIM JUNG-IM ,  LEE NARM-HEE ,  BANG SEUNG-CHAN ,  KIM TAE-JOONG

IPC: H04L27/20 ,  H04B1/707 ,  H04J11/00 ,  H04J13/12 ,  H04J13/20 ,  H04J13/04 ,  H04L27/34

公开(公告)号：GB2352944A

公开(公告)日：2001-02-07

申请号：GB0013114

申请日：2000-05-31

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： LEE HYUCK-JAE ,  KIM JAE-HEUNG ,  SHIM JAE RYONG ,  CHAE JONG-SUK ,  KIM JUNG-IM ,  LEE NARM-HEE ,  BANG SEUNG-CHAN ,  KIM TAE-JOONG

IPC: H04L27/20 ,  H04B1/707 ,  H04J11/00 ,  H04J13/12 ,  H04J13/20 ,  H04J13/04 ,  H04L27/34

Abstract: The present invention relates to an apparatus and method for modulating data by employing orthogonal variable spreading factor (OVSF) codes in a mobile communication system. A code generating means generates at least one spreading code to be allocated to a channel and is selected such that two consecutive pairs of in-phase (I) and quadrature (Q) data correspond to two points located on the same point in the phase domain (see figure) or are symmetrical with respect to the zero point (see fig. 9) . Data for transmission is then spread using the generated code and phase rotated by a Walsh rotator such that the phase difference between consecutive points is ninety degrees (90{). The ninety degree phase difference leads to a reduction in the peak to average power ratio (PAPR) of a mobile station. Preferably the orthogonal complex quadrature phase shift keying (OCQPSK) modulation scheme is adopted.