发明授权
- 专利标题: System and method for receiving a multiple format wireless signal
- 专利标题(中): 用于接收多格式无线信号的系统和方法
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申请号: US11691301申请日: 2007-03-26
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公开(公告)号: US07693191B2公开(公告)日: 2010-04-06
- 发明人: Robert Mark Gorday , Mahibur Rahman , Jorge Ivonnet , Kevin McLaughlin
- 申请人: Robert Mark Gorday , Mahibur Rahman , Jorge Ivonnet , Kevin McLaughlin
- 申请人地址: US TX Austin
- 专利权人: Freescale Semiconductor, Inc.
- 当前专利权人: Freescale Semiconductor, Inc.
- 当前专利权人地址: US TX Austin
- 主分类号: H04J3/06
- IPC分类号: H04J3/06
摘要:
An apparatus (200) and method (300) for receiving a communications signal. A spread spectrum signal demodulator (210) is adapted to demodulate a packet header (110) of a data packet (102) that is communicated by a wireless communications signal. The packet header (110) is modulated with a spread spectrum technique and the spread spectrum signal demodulator (210) produces a packet header detection signal (220) representing a successful detection of a predefined packet header value. A non-spread spectrum signal demodulator (212) is communicatively coupled to the spread spectrum signal demodulator (210) and demodulates, in response to the packet header detection signal (220), a non-spread spectrum modulated data payload within the data packet. A data output select (234) produces demodulated data produced by either one or both the spread spectrum signal demodulator (210) and the non-spread spectrum signal demodulator (212).
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