Method for the interference-resistant transmission of...

Details Method for the interference-resistant transmission of... Method for the interference-resistant transmission of...

H - Electricity

04

K

325/3

H04K 1/04 (2006.01) H04B 1/713 (2006.01)

Patent

CA 1238951

ABSTRACT The invention relates to a method for the interference- resistant transmission by radio of speech signals processed by means of a vocoder using spread frequency bands (SSMA) or a rapid radio frequency change. To avoid the danger of self-interference caused if a great many stations simultaneously use the same frequency band or the same radio frequency-channel collective, it is proposed that the transmitter and the receiver be activated in the rhythm of the intrasystem frame timing during a frame period only if useful information is also present. In this way on average approximately 40% of the transmission time for two-way connections and more than 60% of the transmission time for duplex circuits may be saved and thus the self interference of the system may be reduced accordingly.

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