Wireless communication system using selective mapping for memory-less demodulation and related methods
AssigneeHarris Corporation
InventorJohn W. Nieto
Life of this patent
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Abstract
A wireless communication system may include a first wireless communications device, and a second wireless communications device. The first wireless communications device may include a wireless transmitter, and a modulator coupled to the wireless transmitter for modulating input data to generate a Gaussian phase shift keyed signal having a selected data symbol mapping. The second wireless communications device may include a wireless receiver, and a demodulator coupled to the wireless receiver for demodulating the Gaussian phase shift keyed signal using memory-less symbol decisions based upon the selected data symbol mapping.
Claims10
A wireless communication system comprising:
- a first wireless communications device comprising
- a wireless transmitter, and
- a modulator coupled to said wireless transmitter and configured to modulate input data to generate a Gaussian phase shift keyed signal having a selected data symbol mapping;
- and
- a second wireless communications device comprising
- a wireless receiver, and
- a demodulator coupled to said wireless receiver and configured to demodulate the Gaussian phase shift keyed signal using
- memory-less symbol decisions based upon the selected data symbol mapping,
- at odd symbol indexes, a calculation of a first difference value of absolute values of corresponding real and imaginary values of a current received symbol estimate of the Gaussian phase shift keyed signal, and
- at even symbol indexes, a calculation of a second difference value of absolute values of corresponding real and imaginary values of a phase shifted version of the current received symbol estimate of the Gaussian phase shift keyed signal.
A method for operating a wireless communication system having a first wireless communications device and a second wireless communications device communicating therewith, the method comprising:
- modulating at the first wireless communications device input data to generate a Gaussian phase shift keyed signal having a selected data symbol mapping;
- and
- demodulating at the second wireless communications device the Gaussian phase shift keyed signal using
- memory-less symbol decisions based upon the selected data symbol mapping,
- at odd symbol indexes, a calculation of a first difference value of absolute values of corresponding real and imaginary values of a current received symbol estimate of the Gaussian phase shift keyed signal, and
- at even symbol indexes, a calculation of a second difference value of absolute values of corresponding real and imaginary values of a phase shifted version of the current received symbol estimate of the Gaussian phase shift keyed signal.
Dependencies are inferred from the claim text.