Receiver for bandspread signals

Details Receiver for bandspread signals Receiver for bandspread signals

H - Electricity

04

K

325/3

H04K 1/00 (2006.01) G01S 5/14 (2006.01) H04B 1/707 (2006.01)

Patent

CA 1244887

65175-66 ABSTRACT OF THE DISCLOSURE In the receiver for bandspread signals, the pseudo- random code (PRC) stored in the receiver is synchronized with the code of the received and modulated signal, and the modulation is recovered. The means provided for this purpose include control loops. In the receiver, the modulated carrier signal, after being converted to the IF value, is digitized and then multiplied by the stored PRC. The signal produced in this manner is sampled at twice the rate at which the PRC is read out of the memory. The sampled signal is provided to a counter, and I and Q signals are formed from the counter output values. The controlled variables required for synchronization and demodulation are determined from these I and Q signals in control loops.

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