发明授权
US07920599B1 Methods and systems for synchronizing wireless transmission of data packets
有权
用于同步数据包的无线传输的方法和系统
- 专利标题: Methods and systems for synchronizing wireless transmission of data packets
- 专利标题(中): 用于同步数据包的无线传输的方法和系统
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申请号: US12726960申请日: 2010-03-18
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公开(公告)号: US07920599B1公开(公告)日: 2011-04-05
- 发明人: Srikanth Subramanian , Sathish Viswanathan
- 申请人: Srikanth Subramanian , Sathish Viswanathan
- 申请人地址: IN IN
- 专利权人: Anna University,KBC Research Foundation
- 当前专利权人: Anna University,KBC Research Foundation
- 当前专利权人地址: IN IN
- 代理机构: McDonnell Boehnen Hulbert & Berghoff LLP
- 优先权: IN269/CHE/2010 20100203
- 主分类号: H04B3/20
- IPC分类号: H04B3/20
摘要:
Methods and systems for synchronizing wireless transmission of data packets is provided. Signals having a data packet frame format including a preamble (with a pattern of symbol sequences) and data are received, and patterns of symbol sequences are correlated. A first metric can be calculated that is a ratio of an average of the correlation values and an average of a power of the signals. A second metric can be calculated that defines an average of a power of noise in the signals. The methods include determining an approximate division of the preamble and data in the data packet of each signal based on the first and second metrics. The methods further include determining a cross-correlation between versions of a transmitted signal to produce a number of peaks equal to a number of transmit antennas, generating a third metric based on combinations of cross-correlations, and identifying a position of a maximum peak within the third metric as a fine timing offset amount.
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