Frequency-Modulated Carrier Systems TRIZ Cases

An impulse removal circuit detects and subtracts impulsive noise from demodulated FM signals to preserve signal integrity.

Switch arrangements merge independent chirp signals into a composite waveform, reducing settling time and improving distance measurement accuracy.

Discrete Fourier transform corrects local oscillator frequency errors, enabling high-sensitivity demodulation despite crystal instability.

Chaotic-FSK modulation shapes signal spectra via chaotic sequences to mitigate interference in dispersive channels without complex receiver algorithms.

Quadrature Frequency Shift Keying modulates diagnosis data using four carrier frequencies below 2 kHz for rapid signal output.

Rotates constellation symbols against phase change candidates to match reference points, reducing computational load during LTE uplink frequency hopping.

Complex multipliers isolate inter-symbol interference phase in HE-CPM signals, bypassing matched filters and reducing computational complexity.

A digital wideband phase modulator applies adaptive gain control to correct modulation errors within a phase locked loop.

A synchronous demodulator circuit employs a discrete Fourier transform unit to perform digital mixing and filtering operations.

A GFSK receiver uses a lookup table and calculator to determine symbol distance values for decoding.

A digital FM demodulator computes signal quality metrics to blend stereo output to monaural when interference is detected.