Code Division Multiplex TRIZ Cases

Baseband polarization-vector estimation lets linear antennas handle circular satellite signals with lower polarization loss and interference.

Orthogonal linear antennas use baseband vector estimation and PA/LO calibration to transmit circularly polarized signals with lower polarization loss.

Orthogonal linear antennas estimate polarization vectors and calibrate PAs and LO signals to transmit circular polarization with lower loss.

Horizontal and vertical antennas reconstruct circularly polarized signals through vector estimation and calibration, reducing polarization loss.

A switched NCO and cascaded integrators interpolate CAZAC chirps to cut DAC quantization errors and improve distance estimation.

A switched quadratic phase generator interpolates CAZAC chirps to cut DAC quantization outliers and improve wireless distance estimation.

FFT-based loopback synchronization refines timing and frequency offsets with interpolation and double linearization, even at low SNR.

A bolt-on spread-spectrum overlay hides legacy RF signals below the noise floor to resist detection, jamming, and geolocation.

Orthogonal cover codes let multiple terminals share one uplink resource block, cutting retransmission load and improving NTN spectrum use.

Sequence selection between computer-generated, Gold, and ZC signals lowers pi/2-BPSK PAPR and improves uplink power amplifier efficiency.

Controlled overlap between non-orthogonal frequency resources reduces grant-free access interference while supporting more transmitting devices.

UE-specific spreading, scrambling, and resource mapping help separate overlapping NoMA transmissions and improve multi-UE decoding.

A diode-detector path handles normal reception, while a PLL path activates only when blockers appear to cut receiver power use.

Conditional DCI field interpretation enables OCC and MCS handling only when thresholds are met, reducing uplink control overhead and latency.

Semi-static OCC setup with DCI-based index indication lets NB-IoT NTN uplinks multiplex more UEs on NPUSCH with limited signaling.

Two-dimensional orthogonal reference signals enable faster channel estimation and suppress OFDM inter-carrier interference under delay and Doppler shifts.

Synchronous CDMA codes let aircraft sensor nodes transmit simultaneously with higher data rates and stronger rejection of Wi-Fi and Bluetooth interference.

Reverse sequence processing changes interference patterns before antenna combining, preserving desired signals and stabilizing demodulation.

Code-domain multiplexing lets low-power IoT devices share random access slots with fewer collisions, faster response, and better resource use.

Phase-coded FMCW chirps use codebook-selected phase sequences to mitigate interference between nearby vehicle radars and preserve target detection.

Uses enhanced DMRS port and OCC association to manage larger NR antenna port sets without degrading throughput or communication quality.

Terminal location selects cyclic shifts and root sequences within cell segments, reducing cross-correlation interference and improving mMTC preamble detection.

CSI-RS and SRS provide channel-sparsity information to guide DMRS estimation, improving NR MIMO accuracy with limited statistical inputs.

Varying chirp slopes and frequency offsets helps automotive radars limit mutual interference and improve target detection reliability.

Prime-factor sequence construction with Golay complementary pairs expands sequence quantities beyond powers of two for distinct low-ambiguity detection.

Matrix extensions generate larger sequence sets with improved auto-correlation and cross-correlation for more reliable communication.

Channel-aware scrambling protects common delay information from interference, improving uplink synchronization across satellite-cell terminals.