Invention Grant
- Patent Title: Signal acquisition in a wireless communication system
- Patent Title (中): 无线通信系统中的信号采集
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Application No.: US11022482Application Date: 2004-12-22
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Publication No.: US08027372B2Publication Date: 2011-09-27
- Inventor: Aamod Khandekar , Avneesh Agrawal
- Applicant: Aamod Khandekar , Avneesh Agrawal
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agent Sandip S. Minhas; Peng Zhu
- Main IPC: H04B1/00
- IPC: H04B1/00

Abstract:
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 K1 different time offsets and identifies K2 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.
Public/Granted literature
- US20060209927A1 Signal acquisition in a wireless communication system Public/Granted day:2006-09-21
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