Carrier Regulation TRIZ Cases

Jointly estimating frequency offset and modulation index from the preamble improves FM demodulation accuracy and receiver sensitivity.

Phase-continuous uplink reference signal timing improves frequency offset estimation in high-Doppler links while reducing scheduling overhead.

Phase selection and modified clocking shrink FM range in a polar transmitter, improving EVM and reducing cross-carrier interference.

Using paired FMCW signals, this case estimates OFDM channels in time domain to cut sampling rate, power use, and Fourier-processing complexity.

Reference-frequency phase rotation lets OFDM links modulate and demodulate correctly without mixing frequency alignment or extra signaling.

DSP uses frequency offset detection to separate main and AMCC signals in a coherent receiver without optical-stage splitting.

Dynamic IF selection shifts clock harmonic spurs out of band in NZIF RF demodulation, improving sensitivity with lower processing burden.

Digital resampling with a Farrow filter corrects Doppler-driven CFO by skip or repeat alignment, avoiding hardware dividers and extra clocks.

Phase-based ranging combines exchanged signal measurements and I/Q data to compensate crystal offset and improve transceiver distance accuracy.

Adaptive moving-average filter length minimizes ONU phase noise in coherent burst reception while keeping PON receiver configuration simpler.

Real-valued frequency-domain filter coefficients cut receiver complexity and power use while reducing inter-carrier interference.

Multiple positioning reference signals sent on different frequencies expand tag bandwidth and improve IoT positioning accuracy.

Weighted correction combines low- and high-frequency offset estimates from a shared clock to reduce high-band errors and stabilize communication.