公开(公告)号：HK1147361A1

公开(公告)日：2011-08-05

申请号：HK11101231

申请日：2008-02-06

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： BANG SEUNG CHANG ,  HAN KI CHUL ,  SHIM JAE RYONG ,  KIM JUNG IM ,  KIM TAE JOONG

IPC: H04J20060101

公开(公告)号：DE10075378T1

公开(公告)日：2011-04-14

申请号：DE10075378

申请日：1998-10-02

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： BANG SEUNG CHANG ,  HAN KI CHUL ,  SHIM JAE RYONG ,  KIM JUNG IM ,  KIM TAE JOONG

IPC: H04J11/00 ,  H04B7/26 ,  H04J3/14 ,  H04J13/00 ,  H04J13/10

公开(公告)号：FR2794314B1

公开(公告)日：2004-12-24

申请号：FR0007060

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 ,  H04Q7/32 ,  H04Q7/38

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.

公开(公告)号：HK1108238A1

公开(公告)日：2008-05-02

申请号：HK08101592

申请日：2008-02-13

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： BANG SEUNG CHANG ,  HAN KI CHUL ,  SHIM JAE RYONG ,  KIM JUNG IM ,  KIM TAE JOONG

IPC: H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10

Abstract: An orthogonal complex spreading method for multiple data inputs, each of the data inputs being allocated to either a first group or a second group, comprising steps of: generating first outputs (600) by multiplying each of data inputs in the first group (X 11 ... X n1 ) by a corresponding orthogonal sequence and a corresponding gain, respectively; generating a first output signal (810) by summing the first outputs; generating second outputs (700) by multiplying each of data inputs in the second group (X 12 ... X n2 ) by a corresponding orthogonal sequence and a corresponding gain, respectively; generating a second output signal (820) by summing the second outputs; receiving the first and second output signals in a complex form (900) and complex-multiplying the first and the second output signals by SC(OS 3 +jP-OS 4 ) (900, 300), wherein SC is a spreading code, OS 3 and OS 4 are orthogonal sequences, and P is a predetermined sequence.

公开(公告)号：HK1108237A1

公开(公告)日：2008-05-02

申请号：HK08101591

申请日：2008-02-13

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： SHIM JAE RYONG ,  HAN KI CHUL ,  BANG SEUNG CHANG ,  KIM JUNG IM ,  KIM TAE JOONG

IPC: H04B7/26 ,  H04J11/00 ,  H04J13/00 ,  H04J13/10

Abstract: An orthogonal complex spreading method for multiple data inputs, each of the data inputs being allocated to either a first group or a second group, comprising steps of: generating first outputs (600) by multiplying each of data inputs in the first group (X 11 ... X n1 ) by a corresponding orthogonal sequence and a corresponding gain, respectively; generating a first output signal (810) by summing the first outputs; generating second outputs (700) by multiplying each of data inputs in the second group (X 12 ... X n2 ) by a corresponding orthogonal sequence and a corresponding gain, respectively; generating a second output signal (820) by summing the second outputs; receiving the first and second output signals in a complex form (900) and complex-multiplying the first and the second output signals by SC(OS 3 +jP-OS 4 ) (900, 300), wherein SC is a spreading code, OS 3 and OS 4 are orthogonal sequences, and P is a predetermined sequence.

公开(公告)号：FR2794314A1

公开(公告)日：2000-12-01

申请号：FR0007060

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 ,  H04Q7/32 ,  H04Q7/38

Abstract: In-phase (I) and quadrature (Q) channels in a mobile unit are coded (13) producing digital word and command elements. Coded signals are passed to a code production unit, which forms spread spectrum codes attributable to the I and Q channels. The digital word elements, command elements and spread spectrum codes correspond to points in the same position and symmetrical with respect to a zero point on the phase domain. The elements are applied to a spread spectrum generator producing the signal modulation.