Fast Frequency Hopping Technique
AssigneeGilat Satellite Networks Ltd.
InventorsGuy Levitas, Yaakov Shaer, Yahav Shiri, Amir Alter
Life of this patent
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Abstract
In a communication system employing Frequency Hopping (FH), a transmitter may change a transmission frequency from one transmission burst to a next transmission burst according to a (pseudo random) pattern, and a receiver may change its tuning frequency according to the same pattern to receive the transmission bursts. Transmitters and/or receivers for a communication system employing FH are presented. The transmitters and/or the receivers may be configured to use a continuous waveform (over the burst transmissions). The transmitters and/or receivers may be configured to perform frequency hopping, for example, while maintaining any of symbol timing and carrier phase.
Claims20
An apparatus, comprising:
- a continuous waveform generator;
- a frequency word generator, coupled to the continuous waveform generator;
- a reference sine wave generator, coupled to the continuous waveform generator and to the frequency word generator;
- a first digital to analog converter (DAC), coupled to the continuous waveform generator;
- a second DAC, coupled to the reference sine wave generator;
- and
- an I/Q modulator, coupled to the first DAC and to the second DAC.
An apparatus, comprising:
- a continuous waveform generator;
- a frequency word generator, coupled to the continuous waveform generator;
- a reference sine wave generator, coupled to the continuous waveform generator and to the frequency word generator;
- a digital I/Q modulator, coupled to the continuous waveform generator and to the reference sine wave generator;
- and
- a digital to analog converter (DAC), coupled to the digital I/Q modulator.
An apparatus, comprising:
- a continuous waveform demodulator;
- a frequency word generator, coupled to the continuous waveform demodulator;
- a reference sine wave generator, coupled to the continuous waveform demodulator and to the frequency word generator;
- a digital to analog converter (DAC), coupled to the reference sine wave generator;
- an I/Q demodulator, coupled to the DAC;
- and
- an analog to digital converter (ADC), coupled to the I/Q demodulator, wherein the continuous waveform demodulator is coupled to the ADC.
An apparatus, comprising
- a continuous waveform demodulator;
- a frequency word generator, coupled to the continuous waveform demodulator;
- a reference sine wave generator, coupled to the continuous waveform demodulator and to the frequency word generator;
- an analog to digital converter (ADC);
- and
- a digital I/Q demodulator, coupled to the ADC and to the reference sine wave generator, wherein the continuous waveform demodulator is coupled to the digital I/Q demodulator.
Dependencies are inferred from the claim text.