Method for demodulating a modulated signal, demodulator and receiver
AssigneeNXP B.V.
InventorsHarald Witschnig, Johannes Bruckbauer
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Abstract
A demodulator (6) for demodulating a modulated signal (3) comprises a Hubert transformer (7) for generating a Hubert transformed modulated signal (18) of the modulated signal (3). The Hubert transformed modulated signal (18) comprises modulated (5) and unmodulated signal sequences (4) and originates from an unmodulated signal. The demodulator (6) further comprises a comparing device (14) for comparing the Hubert transformed modulated signal (18) with a reference signal (15), which corresponds to the Hubert transformed unmodulated signal. The demodulator (6) is further configured to identify the modulated and unmodulated signal sequences (4, 5) based on the comparison.
Claims11
A method for demodulating a modulated signal, the method comprising the steps of:
- receiving a modulated signal, which comprises modulated and unmodulated signal sequences and originates from an unmodulated signal;
- generating a Hilbert transformed modulated signal by subjecting said modulated signal to the Hilbert transform;
- comparing at least indirectly said Hilbert transformed modulated signal with a reference signal, which corresponds to the Hilbert transformed unmodulated signal;
- and
- identifying said modulated and unmodulated signal sequences within said modulated signal based on said comparison.
A demodulator for demodulating a modulated signal, the demodulator comprising:
- a Hilbert transformer for generating a Hilbert transformed modulated signal of said modulated signal, which comprises modulated and unmodulated signal sequences and originates from an unmodulated signal;
- and
- a comparing device for comparing said Hilbert transformed modulated signal with a reference signal, which corresponds to the Hilbert transformed unmodulated signal;
- said demodulator being configured to identify said modulated and unmodulated signal sequences based on said comparison.
Dependencies are inferred from the claim text.