Automatic frequency control method of spread spectrum communication system under condition of large frequency offset
A technology of automatic frequency control and spread spectrum communication, which is applied in the field of spread spectrum communication, can solve problems such as correction and inability to complete carrier frequency deviation, and achieve the effect of wide range of carrier frequency deviation
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[0022] Step (1) After orthogonal demodulation, the chip data I of the quasi-baseband preamble sequence symbols that still have residual frequency difference after spectrum shifting is spread chip / Q chip To despread, calculate I ( m ) = Σ n = 1 N I chip ( n ) × PN I ( n ) and Q ( m ) = Σ n = 1 N Q chip ( n ) × PN Q ( n ...
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