Invention Grant
US08194637B2 Method and apparatus for achieving system acquisition and other signaling purposes using the preamble in an OFDM based communications system
有权
用于在基于OFDM的通信系统中使用前置码实现系统获取和其他信令目的的方法和装置
- Patent Title: Method and apparatus for achieving system acquisition and other signaling purposes using the preamble in an OFDM based communications system
- Patent Title (中): 用于在基于OFDM的通信系统中使用前置码实现系统获取和其他信令目的的方法和装置
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Application No.: US12719709Application Date: 2010-03-08
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Publication No.: US08194637B2Publication Date: 2012-06-05
- Inventor: Yunsong Yang , Jianmin Lu , Zhigang Rong
- Applicant: Yunsong Yang , Jianmin Lu , Zhigang Rong
- Applicant Address: US TX Plano
- Assignee: FutureWei Technologies, Inc.
- Current Assignee: FutureWei Technologies, Inc.
- Current Assignee Address: US TX Plano
- Agency: Slater & Matsil, L.L.P.
- Main IPC: H04J3/06
- IPC: H04J3/06 ; H04J3/14 ; H04B3/10
Abstract:
In the system acquisition process system information is non-coherently detected using correlation of reconstructed and received preamble signals, such as the primary broadcast control channel (PBCCH) and the acquisition pilots (TDM1, TDM2, and TDM3). The phase correlation signals between the correlated signals of PBCCH and TDM2 or TDM3 and between the correlated signals of TDM2 and TDM3 are combined to decode other sector interference (OSI) information and the like. Acquisition is also made more efficient by taking advantage of predictable information based on system synchronicity. The sync/async bit is included in at least one of the acquisition pilots. The mobile then uses knowledge of system synchronicity to more efficiently detect the additional information in the superframe preamble.
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