发明名称 |
Method for generating complex quasi-orthogonal code and apparatus and method forspreading channel data using the quasi-orthogonal code in cdma communication sy stem |
摘要 |
A method for generating a complex quasi-orthogonal code for channel spreading in a CDMA communication system is disclosed. The method comprises generating an M-sequences having a length N and a specific sequence having a good full correlation property with the M-sequence; generating a predetermined number of other specific sequences by circularly shifting said specific sequence; generating a predetermined number of other M-sequences by circularly shifting said M-sequence, and column permutating the circularly shifted specific sequences in a same method as a column permutating method for converting the generated M-sequences to Walsh orthogonal codes to generate candidate masks; generating quasi-orthogonal code representatives by operating the candidate masks and the Walsh orthogonal codes having the same length as the mask candidates; and selecting quasi-orthogonal codes out of the generated quasi-orthogonal code representatives and a partial correlation between different quasi-orthogonal codes, and selecting masks pertinent to generating the selected quasi-orthogonal codes. |
申请公布号 |
AU3079800(A) |
申请公布日期 |
2000.08.01 |
申请号 |
AU20000030798 |
申请日期 |
2000.01.11 |
申请人 |
SAMSUNG ELECTRONICS CO. LTD. |
发明人 |
JAE-YOEL KIM;JAE-MIN AHN;HEE-WON KANG;SEUNG-JOO MAENG;YOUNGKY KIM;KYEONG-CHEOL YANG |
分类号 |
H04J13/00;H04J11/00;H04J13/18;H04L27/30;H04W76/02;H04W80/02 |
主分类号 |
H04J13/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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