US6885691B1

5G,4G

Title:

Scrambling codes and channelization codes for multiple chip rate signals in CDMA cellular mobile radio communication system

Application number:

US20000630543

Family ID:

27350040

Publication Date:

26-04-2005

Application date:

01-08-2000

Priority Date:

02-08-1999

Current assignee:

LG

Declaring company:

LG

Abstract  Abstract

A system and method for allocating channelization code and scrambling code in multiple code rates is disclosed. In the present invention many user signals that have various chip rates in overlaid frequency band can be transmitted with minimum interference between users by allocating orthogonal spreading code in which the sum of bits for a period that is determined by the ratio of chip rates is canceled respectively as channelization codes.