发明名称 |
Space-time spreading method of CDMA wireless communication |
摘要 |
<p>We describe a method for CDMA transmission of sets of data symbols to users that are organized into one or more user groups. Each user group is paired with a group of spreading codes, referred to as a "code group." Each set of data symbols that are destined for respective users of a given user group is transmitted in the form of two or more distinct signal sequences. Each such signal sequence is transmitted from a respective one of two or more transmitting antennas. Each signal sequence is a linear combination of spreading code sequences belonging to the corresponding code group. Within each of these linear combinations, each spreading code sequence that appears has a scalar coefficient. Each of these scalar coefficients is a linear combination of pertinent data symbols (i.e., data symbols destined for users in the given user group) or of complex conjugates of pertinent data symbols. <IMAGE></p> |
申请公布号 |
EP1018808(B1) |
申请公布日期 |
2008.06.04 |
申请号 |
EP19990309995 |
申请日期 |
1999.12.10 |
申请人 |
LUCENT TECHNOLOGIES INC. |
发明人 |
HOCHWALD, BERTRAND M.;MARZETTA, THOMAS LOUIS;PAPADIAS, CONSTANTINOS BASIL |
分类号 |
H04B1/707;H04B7/06;H04B7/26 |
主分类号 |
H04B1/707 |
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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