Frequency hopped single sideband mobile radio system

Details Frequency hopped single sideband mobile radio system Frequency hopped single sideband mobile radio system

H - Electricity

04

B

325/19, 325/31

H04B 7/26 (2006.01) H04B 1/68 (2006.01)

Patent

CA 1199682

- 21 - FREQUENCY-HOPPED SINGLE SIDEBAND MOBILE RADIO SYSTEM Abstract The present invention relates to a frequency hopped single sideband (SSB) mobile radio system implemented by hopping the carrier frequency of an input signal (s(t)) every ?seconds. The hopping is controlled by a carrier-frequency hopped sequence (fi(t)) generated by a carrier-frequency-hopping generator. When employed in a frequency-hopped SSB transmitter, the carrier sequence functions to modulate the input signal, "hopping" it to a different carrier frequency every ? seconds. The carrier frequency-hopped SSB receiver employs the identical carrier sequence as used by the transmitter to demodulate the transmitted carrier-frequency-hopped SSB signal, thereby recovering the original single sideband signal (s(t)). By frequency hopping the carrier signal of an SSB signal, the present invention mitigates the effects of co-channel interference and frequency selective fading inherent in prior art SSB cellular mobile radio systems.

423000

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