发明名称 |
METHOD FOR GENERATING COMPLEX QUASI-ORTHOGONAL CODE AND APPARATUS AND METHOD FOR SPREADING CHANNEL DATA USING THE QUASI-ORTHOGONAL CODE IN CDMA COMMUNICATION SYSTEM |
摘要 |
<p>A method for generating a complex quasi-orthogonal code for channel spreadin g 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 sequence s 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 canditate masks; generating quasi-orthogonal code representatives b y operating the canditate 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. </p> |
申请公布号 |
CA2357518(C) |
申请公布日期 |
2005.11.29 |
申请号 |
CA20002357518 |
申请日期 |
2000.01.11 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
YANG, KYEONG-CHEOL;KIM, YOUNG-KY;AHN, JAE-MIN;KIM, JAE-YOEL;MAENG, SEUNG-JOO;KANG, HEE-WON |
分类号 |
H04J13/00;H04J11/00;H04J13/18;H04L27/30;H04W76/02;H04W80/02;(IPC1-7):H04J13/02 |
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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