Multiple Carrier Systems TRIZ Cases
- Baseband Receiver Circuit With Switched-Capacitor Anti-Aliasing
A down-sampled receiver path uses switched-capacitor filtering for low power, anti-aliasing, and temperature-stable ADC input.
- Frequency-Domain I/Q Balance Compensation for Zero-IF Spurious Rejection
Frequency-domain coefficients and overlap-and-save processing correct I/Q imbalance while reducing real-time receiver processing.
- IQ Signal Generator Feedback for Frequency-Dependent Sideband Suppression
A built-in analysis module detects frequency-dependent IQ errors and controls modulation for consistent sideband suppression.
- QAM Encoding for Zero-Crossing Avoidance in Wireless Transceivers
Correction-list encoding changes QAM symbols to avoid 180-degree phase differences and protect adjacent-channel performance.
- OFDM Preamble Detection Using Quantized Correlation
This case replaces complex multiplications with quantized template sums for accurate OFDM preamble detection under large frequency offsets.