发明授权
- 专利标题: Method and apparatus for receiving and despreading a continuous phase-modulated spread spectrum signal using self-synchronizing correlators
- 专利标题(中): 用于使用自同步相关器接收和解扩连续相位调制扩频信号的方法和装置
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申请号: US480442申请日: 1995-06-07
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公开(公告)号: US5627856A公开(公告)日: 1997-05-06
- 发明人: Randolph L. Durrant , Mark Burbach
- 申请人: Randolph L. Durrant , Mark Burbach
- 申请人地址: CO Colorado Springs
- 专利权人: Omnipoint Corporation
- 当前专利权人: Omnipoint Corporation
- 当前专利权人地址: CO Colorado Springs
- 主分类号: H04B
- IPC分类号: H04B20060101 ; H04B1/707 ; H04J13/00 ; H04J14/00 ; H04L27/20 ; H04L27/227 ; H04L27/233 ; H04B1/06
摘要:
Apparatus and method for despreading a received continuous phase modulated spread spectrum signal includes a power divider for dividing a received spread spectrum signal into a real signal and an imaginary signal. A real CPM correlator demodulates the real signal into I and Q components and separately correlates the real I component and the real Q component without generating a correlation sequence, thereby performing self-synchronizing correlation. Likewise, an imaginary CPM correlator demodulates the imaginary signal into I and Q components and separately correlates the imaginary I component and the imaginary Q component without generating a correlation sequence, thereby performing self-synchronizing correlation. The real I and imaginary I correlation signals are combined into a final I correlation signal, and the real Q and imaginary Q correlation signals are combined into a final Q correlation signal.
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