发明名称 |
SIGNAL ACQUISITION IN A WIRELESS COMMUNICATION SYSTEM |
摘要 |
Each base station transmits a TDM pilot 1 having multiple instances of a pilot-1 sequence generated with a PN1 sequence and a TDM pilot 2 having at least one instance of a pilot-2 sequence generated with a PN2 sequence. Each base station is assigned a specific PN2 sequence that uniquely identifies that base station. A terminal uses TDM pilot 1 to detect for the presence of a signal and uses TDM pilot 2 to identify base stations and obtain accurate timing. For signal detection, the terminal performs delayed correlation on received samples and determines whether a signal is present. If a signal is detected, the terminal performs direct correlation on the received samples with PN1 sequences for K<SUB>1</SUB> different time offsets and identifies K<SUB>2</SUB> strongest TDM pilot 1 instances. For time synchronization, the terminal performs direct correlation on the received samples with PN2 sequences to detect for TDM pilot 2. |
申请公布号 |
WO2006009711(A2) |
申请公布日期 |
2006.01.26 |
申请号 |
WO2005US21051 |
申请日期 |
2005.06.14 |
申请人 |
QUALCOMM INCORPORATED;KHANDEKAR, AAMOD;AGRAWAL, AVNEESH |
发明人 |
KHANDEKAR, AAMOD;AGRAWAL, AVNEESH |
分类号 |
H04L27/00;H04B1/707;H04L27/26 |
主分类号 |
H04L27/00 |
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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