Frequency/Rate-Modulated Pulse Demodulation TRIZ Cases

Phase histogram and repetition-period estimation improve radar pulse sequence characterization when random pulse losses distort intervals.

Phase-based pulse analysis estimates repetition periods despite random pulse loss, using histogram peak extraction for reliable signal characterization.

A delay-and-multiplier FSK circuit demodulates HART signals while using loop current and sleep switching to cut adapter power demand.

By subtracting a remodulated conventional signal, this case isolates a TM signal on the same carrier while preserving legacy demodulation.

By regenerating and subtracting the first modulation, this case isolates TM signals from a shared carrier with minimal prior signal information.

Master UWB pulses let slave readers align clocks by expected time slots, improving real-time locating accuracy without extra sync hardware.

AND-based truncation of I/Q signals cuts duty cycle below 25% to preserve receiver noise figure and gain during demodulation.

Pseudo-PSK pulse modeling with Golay and m-sequence spreading improves CPM decoding under large frequency offsets while reducing power use.

Frequency multiplication and pulse-width changes combine data and control signals, enabling remote device configuration over existing links.

AC-coupled pulse edge demodulation carries power and data over shared implant wires while limiting DC leakage and uplink interference.

An amplitude mask lowers selected carrier power while redundant frequency components preserve data recovery and interoperability in restricted bands.

A configurable RFID transponder switches protocol types and uses timing calibration to prevent field-gap decoding errors over inductive links.

Window samplers with opposing pattern detectors quickly bracket an unknown clock frequency, cutting PLL convergence time and IC power.

A single tapped ring oscillator lets multiple channels generate independent PWM or PFM signals with selectable deadtime and lower power.

Receiver-side gain feedback equalizes multichannel signal power to mitigate the near-far problem across wide frequency bands.

Single-tap spatial filters applied across frequency sub-bands suppress narrowband interference and improve SINR in multi-receiver wireless links.

Sectoring the symbol constellation limits soft-bit calculations to nearby symbols, cutting computation time and memory use while preserving accuracy.

Iterative IQ symmetry testing adjusts gain and phase in radio receivers to correct mixer mismatch and maintain SNR in complex modulation.

Parallel multi-frequency matched filtering improves weak 1090 MHz ADS-B message detection under frequency uncertainty and narrow-band constraints.

Unequal coordinate ranges in soft decision mapping cut quantizing distortion, improving coding gain and lowering bit error rates.

Reference-duration calibration and register-based protocol selection keep passive RFID field-gap decoding reliable despite timing shifts in inductive links.

Even-odd sample splitting lets parallel IF demodulators and filters handle high bandwidth at lower processing rate, cost, and power.

Complex signals are quantized by vector magnitude before correlation, cutting computation and power while preserving useful accuracy.

A counter-comparator scheme measures oscillator cycles once and sets divider values to keep semiconductor memory refresh requests consistent.

Multiple test tones derive filter coefficients that correct frequency-dependent I/Q phase and amplitude imbalance to improve image rejection.

Repeated training symbols in one preamble let mmWave receivers measure more antenna channels and compute beamforming weights with fewer ADCs.

AC zero-cross timing lets a microprocessor verify its clock precision without watchdog chips, cutting circuit complexity and cost.

A single one-bit ADC and lookup-table filtering convert complex bandpass signals to baseband with lower power and hardware cost.

An analog voltage and comparator scheme identifies input clock frequency ranges inside the IC, eliminating extra reference-selection pins.

Parallel phase decomposition and closed-loop power control let OFDM transmitters use efficient switched amplifiers while preserving signal fidelity.

Programmable delay elements correct I/Q phase and duty-cycle errors, reducing sideband images, circuit complexity, and power use.

Cyclic prefix restoration and frequency-domain equalization recover VSB symbols with lower complexity under multipath distortion and noise.

Half-cycle pulse segmentation with delayed latch timing detects when pulse frequency modulation reaches its maximum operating frequency.

Varying PWM pulse phase spreads spectral energy, easing post-filtering and reducing current-supply interference at carrier harmonics.

Parallel ranging and communication paths in a UWB circuit enable simultaneous distance tracking, high-speed PPM data transfer, and lower peak power.

A length shift keying modulation method encodes data bits into carrier signal lengths to maintain constant power levels.

A UWB receiver performs fast Fourier transform on symbol signals, exchanges real and imaginary parts, and inversely outputs data to simplify despreading.

A method generates MIMO signal streams by transforming antenna signals into reduced sequences using cyclic delay and power amplifier modules.

Comparing cell characteristic ratios in OFDM symbols estimates carrier frequency offset, reducing computational complexity from multiple FFTs.

Pre-calculated FFT parameters and selective filtering reduce computational complexity while separating adjacent AM and DRM transmissions.

Correlating reception signals with multiple delay intervals enables simultaneous PPM and bi-phase demodulation without complex template waveforms.

Calculate transmit and receive weighting factors to null interfering signals, improving signal-to-noise ratio.

Virtual floppy storage for SAM keys eliminates physical loss risks while TPM seal ensures secure recovery.

A clock-detecting circuit counts microprocessor oscillation periods between utility power zero crossing points to verify timing accuracy.

Estimate carrier frequency and phase offsets by maximizing the Viterbi winning path metric, enabling blind demodulation without pilot signals.

A multifunction system integrates ranging and communication using pulse position modulation for parallel signal processing.

Multi-carrier bus arbitration assigns unique binary addresses to users for priority-based conflict resolution.

FFT-based initial estimation followed by iterative correlation reduces false alarms and data loss during UHF SATCOM waveform acquisition.

A cancellation unit estimates and removes high data rate user signal contributions from composite received signals to generate a cleaner resultant signal.