Invention Application
- Patent Title: Mixed mode preamble for MIMO wireless communications
- Patent Title (中): 用于MIMO无线通信的混合模式前导码
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Application No.: US11079962Application Date: 2005-03-15
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Publication No.: US20060088120A1Publication Date: 2006-04-27
- Inventor: Christopher Hansen , Jason Trachewsky , R. Moorti , Christopher Young
- Applicant: Christopher Hansen , Jason Trachewsky , R. Moorti , Christopher Young
- Main IPC: H04L1/02
- IPC: H04L1/02

Abstract:
A method for generating a preamble of a frame for a multiple input multiple output (MIMO) wireless communication begins by, for a first transmit antenna of the MIMO communication, generating a legacy preamble portion for the frame in accordance with a legacy wireless communication protocol, wherein the legacy preamble portion includes at least a first training sequence and a second training sequence and generating a current protocol preamble portion for the frame in accordance with a protocol of the MIMO wireless communication. The processing continues, for at least a second antenna of the MIMO communication, by generating a cyclically shifted legacy preamble portion for the frame, wherein the cyclically shifted legacy preamble portion includes at a cyclically shifted first training sequence and a cyclically shifted second training sequence, wherein the cyclically shifted first training sequence is time-shifted with respect to the first training sequence by a fraction of duration of the legacy preamble portion, and wherein the cyclically shifted second training sequence is time-shifted with respect to the second training sequence by the fraction of duration of the legacy preamble portion and generating a second current protocol preamble portion for the frame in accordance with a protocol of the MIMO wireless communication.
Public/Granted literature
- US07826547B2 Mixed mode preamble for MIMO wireless communications Public/Granted day:2010-11-02
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