发明名称 |
DEVICE USED FOR MOBILE USER UNIT OF SPREAD-SPECTRUM MULTIPLE ACCESS WIRELESS SYSTEM BASED UPON ORTHOGONAL FREQUENCY-DIVISION MULTIPLEX(OFDM) SYSTEM |
摘要 |
PROBLEM TO BE SOLVED: To enable a mobile user device to seedily discriminate and synchronize with a downlink of the base station sending the intensest signal through an orthogonal frequency-division multiplex(OFDM) system, based upon a spread- spectrum multiple access(SSMA) system. SOLUTION: The base station discrimination is actualized by finding the gradient of the most intense received pilot signal (having maximum energy). A pilot tone hopping series is based upon a Latin square series. With the pilot tone hopping series based upon Latin square, the need that the mobile user device has in only for determining the frequency of a pilot tone at a certain time. The gradient and initial frequency shift of the pilot tone hopping series having the highest reception power are determined, by using a natural maximum energy detector. The natural gradient of the pilot hopping series is used to discriminate the base station having the most intense down-link signal. |
申请公布号 |
JP2001358694(A) |
申请公布日期 |
2001.12.26 |
申请号 |
JP20010116607 |
申请日期 |
2001.04.16 |
申请人 |
LUCENT TECHNOL INC |
发明人 |
LAROIA RAJIV;LI JUNYI;RANGAN SUNDEEP;VISWANATH PRAMOD |
分类号 |
H04J11/00;H04B1/7143;H04B1/7156;H04B7/26;H04L5/02;H04L27/26;(IPC1-7):H04J11/00;H04J13/00 |
主分类号 |
H04J11/00 |
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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