公开(公告)号：EP1974487A4

公开(公告)日：2013-07-24

申请号：EP07707273

申请日：2007-01-17

Applicant: DOSHISHA

Inventor： SASAOKA HIDEICHI ,  IWAI HISATO ,  MIYAMOTO YUSUKE

IPC: H04J13/00 ,  H04B1/707 ,  H04B1/709 ,  H04J11/00 ,  H04J13/16 ,  H04J13/18 ,  H04L5/00

CPC classification number: H04L5/0021 ,  H04B2201/709709 ,  H04J13/0048 ,  H04J2013/165

Abstract: A MC-CDMA transmitter and an MC-CDMA receiver are provided, which use a novel orthogonal spreading code that allows an effect by a delay wave to appear in only a specific user. An MC-CDMA system includes: a transmitter which multiplies a transmitting signal by a sinusoidal signal which has an amplitude of r and is orthogonal as a result that the frequency periods are different among users, in a frequency domain to be spread and split into orthogonal sub-carriers, and multiplexes the sub-carriers; and a receiver for receiving a transmitting signal from the transmitter in a manner that a sinusoidal signal, which has an amplitude of r and is orthogonal as a result that the frequency periods are different among users, is multiplied by the transmitting signal in a frequency domain, and the resultant is inversely spread.

公开(公告)号：JP2007194727A

公开(公告)日：2007-08-02

申请号：JP2006009005

申请日：2006-01-17

Applicant: Doshisha ,  学校法人同志社

Inventor： SASAOKA SHUICHI ,  IWAI MASATO ,  MIYAMOTO YUSUKE

IPC: H04J11/00 ,  H04B1/707 ,  H04B1/709 ,  H04J13/18

CPC classification number: H04L5/0021 ,  H04B2201/709709 ,  H04J13/0048 ,  H04J2013/165

Abstract: PROBLEM TO BE SOLVED: To provide MC-CDMA transmitters and receivers using a new orthogonal diffusion code in which the influence of delay waves appears only in a specific user. SOLUTION: An MC-CDMA system using a multi-carrier CDMA system comprises: the transmitter for multiplying the real-axis and imaginary-axis components of a transmission signal in a frequency region by sinusoidal signals that orthogonally cross since the amplitude is 1 and the period differs among users for diffusion and dividing into a plurality of orthogonal subcarriers for multiplexing and transmitting; and the receiver for multiplying the real-axis and imaginary-axis components of a transmission signal from the transmitter by sinusoidal signals that orthogonally cross since the amplitude is 1 and the period differs among users for inverse diffusion and for receiving the transmission signal. COPYRIGHT: (C)2007,JPO&INPIT

Abstract translation: 要解决的问题：使用新的正交扩散码来提供MC-CDMA发射机和接收机，其中延迟波的影响仅在特定用户中出现。 解决方案：使用多载波CDMA系统的MC-CDMA系统包括：发射机，用于通过正交信号乘以频率区域中的发射信号的实轴和虚轴分量，因为幅度是 1，并且用于扩散的用户之间的周期不同，并且被分成用于复用和发送的多个正交子载波; 以及接收机，用于将来自发射机的发射信号的实轴和虚轴分量乘以由于幅度为1而正交交叉的正弦信号，并且用于反向扩散的用户之间的周期不同，并且用于接收发送信号。 版权所有（C）2007，JPO＆INPIT