发明名称 |
Device and method for generating quaternary complex quasi-orthogonal code and spreading transmission signal using quasi-orthogonal code in CDMA communication system |
摘要 |
A method for generating a quaternary complex quasi-orthogonal code in a CDMA communication system is disclosed. The method comprises generating an M-sequence and then generating specific sequences having a good full correlation property with the M-sequence; generating a column permutation function for converting the M-sequence to a Walsh code; generating candidate masks by column shifting the specific sequences with the column permutation function; generating quasi-orthogonal code representatives by operating the candidate masks and the Walsh codes having the same length as that of the candidate masks; and selecting a quasi-orthogonal code satisfying a partial correlation with the Walsh codes, out of the generated quasi-orthogonal code representatives, and selecting a mask related to generation of the selected quasi-orthogonal code.
|
申请公布号 |
US6674712(B1) |
申请公布日期 |
2004.01.06 |
申请号 |
US19990391731 |
申请日期 |
1999.09.08 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
YANG KYEONG-CHEOL;KIM JAE-YOEL;KANG HEE-WON;KIM YOUNG-KY |
分类号 |
H04B1/707;H04J13/00;H04J13/02;H04M3/00;(IPC1-7):H04J11/00 |
主分类号 |
H04B1/707 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|