Demodulating a wireless signal modulated by phase-shift keying
Assigneeu-blox AG
InventorZhenlan CHENG
Life of this patent
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Abstract
A method and apparatus are provided for demodulating a wireless signal modulated by phase-shift keying. The signal comprises a plurality of symbols. The method comprises: obtaining (310) a first sequence of samples based on the signal; converting (320) the first sequence of samples to a first sequence of frequency domain samples; selecting (330), as a decision variable, the sample that has the maximum magnitude among the first sequence of frequency domain samples; and identifying (340) a symbol or a symbol-transition based on the decision variable.
Claims15
A method of demodulating a wireless signal modulated by phase-shift keying, the wireless signal comprising a plurality of symbols, the method comprising:
- obtaining a first sequence of samples based on the wireless signal;
- converting the first sequence of samples to a first sequence of frequency domain samples;
- selecting, as a decision variable, a sample that has a maximum magnitude among the first sequence of the frequency domain samples;
- and
- identifying a symbol or a symbol-transition based on the decision variable.
A demodulator for a wireless signal modulated by phase-shift keying, the wireless signal comprising a plurality of symbols, the demodulator comprising:
- an input, configured to obtain a first sequence of samples based on the wireless signal;
- a first frequency-transform block, configured to convert the first sequence of samples to a first sequence of frequency domain samples;
- a first selection block, configured to select, as a decision variable, a sample that has a maximum magnitude among the first sequence of frequency domain samples;
- and
- a decision block, configured to identify a symbol or a symbol-transition based on the decision variable.
Dependencies are inferred from the claim text.