Modulated-Carrier Systems TRIZ Cases
- In-band On-Channel Radio CSI Estimation Using Median Filtering Bias Correction
A method estimates channel state information for in-band on-channel radio signals using median filtering and bias correction functions.
- NR-U SSB Frame Timing Derivation via Position
Deriving frame timing from synchronization signal block positions reduces physical broadcast channel payload complexity in new radio unlicensed carriers.
- Midamble-Enhanced WLAN Packet Structure for MIMO Channel Estimation
Inserting midambles between data segments enables accurate MIMO channel estimation during long packet transmission, resolving throughput limitations.
- PUSCH Repetitive Transmission with Frequency Hopping for Channel Estimation
Segmenting PUSCH transmissions into frequency-hopped repetitions using DMRS mediators to resolve channel estimation deterioration.
- Scrambling Sequence Randomness for PAPR Reduction
An 11th-order polynomial scrambler increases signal randomness, reducing peak-to-average power ratio in wireless transmissions.
- PDSCH and SSB Reception Prioritization in 5G NR
Prioritizes PDSCH or SSB reception based on quasi-co-location assumptions and reporting periods.
- UWB Receiver Circuit Complexity Reduction via Narrowband Phase Demodulation
A UWB receiver extracts a single modulated frequency line to isolate a sinusoidal narrow-band signal for direct phase demodulation.
- Multi-Level Phase Shifting in Mach-Zehnder Modulator Arms
Dual CMOS drivers generate multi-level phase shifts in a single MZM arm segment without external digital-to-analog converters.
- Dynamic Pilot Pattern Selection for 5G Terminal Mobility
Network devices select pilot patterns matching terminal movement speed, reducing pilot overhead while maintaining channel estimation accuracy.
- Index Modulation for 5G NR Uplink Coverage Enhancement
Index modulation encodes data via resource locations to reduce peak-to-average power ratio, addressing limited uplink coverage in dynamic 5G environments.
- Variable RF Modulator Single Path Multi-Mode Operation
Dynamic parameter adjustment of components in a single modulation path reduces device complexity and manufacturing costs for multi-mode wireless devices.
- PTRS Configuration via Implicit Signaling for 5G Overhead Reduction
Implicitly indicating PTRS time-frequency locations through MCS, subcarrier spacing, and bandwidth reduces explicit signaling overhead in 5G systems.
- Digital RZ-DPSK Modulator Architecture Reducing Analog Complexity
A digital architecture generates return-to-zero control signals using separate data streams to drive a single modulator.
- DQPSK Demodulator Stabilizes Signal Integrity Against Temperature Fluctuations
A DQPSK demodulator uses a wavelength tuner to introduce phase shifts between optical signals for reliable data recovery.
- OFDM Frame Structure for Mixed TDMA FDMA Access
A filtered OFDM frame structure broadcasts redundant beacon data across all frequencies to enable mixed TDMA and FDMA access modes.
- Transmitting Device Signal Interference Cancellation Feedback
A transmitting device generates input signals via a control circuit to cancel interference from leakage signals in radio frequency transmissions.
- Inductive RFID Transponder Timing Calibration via Reference Duration
A transponder decodes data by measuring field gap durations in an inductive carrier signal.