RAPID SIGNAL ACQUISITION AND SYNCHRONIZATION FOR ACCESS TRANSMISSIONS
申请公布号:WO1999025079(A1)
申请号:US1998023848
申请日期:1998.11.10
申请公布日期:1999.05.20
摘要:<p>A system and method for rapidly acquiring timing of an access transmission that uses an access probe (500) that is transmitted in stages. A first stage (560) of the access probe preamble (520) is spread with a short pseudonoise (PN) code pair. A second stage (570) of the access probe preamble (520) is spread with both the short PN code pair and a long PN code. Transmitting the access probe (500) in stages (560, 570) reduces the number of hypotheses, and hence the time, required by a receiver attempting to acquire the access probe (500).</p>