发明名称 |
APPARATUS AND METHOD FOR MODULATING DATA MESSAGE BY EMPLOYING ORTHOGONAL VARIABLE SPREADING FACTOR (OVSF) CODES IN MOBILE COMMUNICATION SYSTEM |
摘要 |
A method for converting source data to a channel-modulated signal having a plurality of pairs of in-phase (I) and quadrature-phase (Q) data in a mobile station, wherein the mobile station uses at least one channel, includes the steps of: a) encoding the source data to generate at least one data part and a control part; b) generating at least one spreading code to be allocated to the channel, wherein each spreading code is selected on the basis of a data rate of the data part and the control part and spreading codes are selected so that two consecutive pairs of the I and Q data are correspondent to two points located on same point or symmetrical with respect to a zero point on a phase domain; and c) spreading the control part and the data part by using the spreading code, to thereby generate the channel-modulated signal. |
申请公布号 |
US2015030055(A1) |
申请公布日期 |
2015.01.29 |
申请号 |
US201414484533 |
申请日期 |
2014.09.12 |
申请人 |
Electronics and Telecommunications Research Institute |
发明人 |
BANG Seung Chan;KIM Tae Joong;KIM Jae Heung;KIM Jung Im;CHAE Jong Suk;LEE Hyuck Jae;SHIM Jae Ryong;LEE Narm Hee |
分类号 |
H04B1/7073;H04J13/10;H04J13/20;H04J13/00 |
主分类号 |
H04B1/7073 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
Daejeon KR |