Patent ID: 8913646
Filing Date: 2014-12-16
Classification: H04B

Abstract:
1. A method for RF system operation, comprising the steps of: determining a bandwidth required for transmission of an RF signal portion; when the bandwidth required for transmission of the RF signal portion is less than 500 kHz, dividing a channel into multiple sub-channels, each sub-channel having a bandwidth less than 500 kHz, modulating the RF signal portion in each sub-channel by setting the bandwidth of the RF signal portion to the bandwidth of the sub-channels, varying the modulation as a function of time, and transmitting in the channel by mini-hopping (changing) between the sub-channels; and controlling the RF signal portion over time so that power spectral density is not greater than 8 dBm in any 3 kHz band during a time interval of continuous transmission, wherein the step of mini-hopping between sub-channels is executed in a sequence, wherein the function of time includes time multiplexing, and wherein setting the bandwidth of the RF signal portion to the bandwidth of the sub-channels includes reducing a bandwidth of a transceiver to be substantially equal to the bandwidth of the sub-channels.