Multi-Frequency Code Systems TRIZ Cases
- AI/ML I/Q Demodulation Using Prior Symbols for NRZ Signals
Multiple I/Q inputs with prior symbol history let an AI/ML demodulator recover NRZ and MSK signals with low bit error rates.
- Targeted Spectrum Predistortion for Low-Load DPD Updates
Selective IMD filtering keeps key distortion frequencies for DPD coefficient updates, cutting processing load while improving bit-error performance.
- Dualband Predistortion for Fast Wireless Amplifier Distortion Updates
By splitting signals into low and high bands, this case cuts predistortion processing load while enabling faster distortion updates and better BER.
- Clipped Pulse Restoration for OFDM A/D Converter Saturation
Controlled analog clipping plus digital pulse reconstruction reduces OFDM A/D saturation effects, lowering converter cost and out-of-band emissions.
- DCI Scrambling Masks for Faster Blind Detection in Polar Decoding
Identifier-based scrambling masks in DCI frozen bits enable early decode termination, cutting blind detection time, false alarms, and interference.
- SerDes Data Modulator Using Low-Rate Multiplexing for High-Speed Output
Low-rate data and clock multiplexing creates full-rate SerDes output without full-rate active paths, cutting power while sustaining high speed.
- Frozen-Bit UE ID Scrambling for Early DCI Blind Decoding
Separate scrambling masks embed UE ID in frozen bits, enabling early DCI blind-decoding termination and lower receiver energy use.
- OFDM Alias Detection Circuitry for In-Band Signal Recovery
By folding DAC-generated aliases back in-band, this OFDM receiver improves signal quality and bandwidth use without anti-aliasing filters.
- Adaptive Slicer Thresholds for Recovered Clock Jitter Reduction
Adaptive slicer thresholds use leading-bit and ISI voltage estimates to cut recovered clock jitter and improve high-speed data recovery.
- OFDM Bootstrap Signal Detection via Cyclic Shift Correlation
Channel-shaped cross-correlation detects cyclic-shift bootstrap signaling in OFDM frames, cutting receiver complexity and resource load.
- Broadband Signal Phase Shifting for Crest Factor Reduction
Phase shifts between narrowband carriers cut broadband crest factor, improving power amplifier linearity and efficiency without degrading signal quality.
- MHL Receiver Common-Mode Compensation for Clock Swing
A negative-gain common-mode feedback circuit cuts MHL clock swing at the receiver, preserving differential gain and signal margin.