Secret Communication TRIZ Cases
- Data Access and Permute Unit for Vector Processing
A data processing unit performs permutation operations in series with register access and execution to optimize vector handling.
- Signal Processing Device Multi-Stage Modulation Resolution
Multi-stage modulation decomposes patterns into M1 through Mk ranges, improving security against eavesdropping in optical communication.
- Frequency Offset Estimation in OFDM Baseband Receiver
A frequency domain estimation circuit calculates signal field phase angles after FFT processing to determine carrier frequency offset errors.
- Non-Integer QAM Constellations for Satellite Spectral Efficiency
Circular non-integer QAM constellations minimize non-linear distortion impact, increasing channel capacity while maintaining average power.
- Robust Channel Estimation via Cyclic Shift Training Symbols
Cyclic shift training symbols reduce inter-symbol interference in MIMO OFDM systems, maintaining accuracy without increasing computational complexity.
- Adaptive Cyclic Prefix Length for ISI Mitigation in OFDM Systems
Dynamic cyclic prefix adjustment reduces inter-symbol interference from multipath channels while maintaining fixed symbol length and frequency efficiency.
- Optical Fiber Secure Communication Apparatus and Data Encryption Method
A hybrid encryption system combines algorithmic security with frequency hopping across multiple optical wavelengths to protect transmission data.
- OFDM Baseband Signal PAPR Reduction via Real Imaginary Processing
A communication device processes IFFT output data to generate controlled post-distribution signals for baseband generation.
- Crest Factor Reduction Using Peak Clipping for RF Amplifier Efficiency
Dynamic peak clipping reduces the peak-to-average ratio, preventing amplifier saturation and spectral expansion while maintaining power efficiency.
- Signal Point Movement for DC Offset Compensation
Moving outermost signal points reduces short-term DC offsets and low-frequency components, improving encoding efficiency without additional bit insertion.
- Heterogeneous Wireless Network Secrecy via Interference Thresholds
Distributed wireless networks calculate local transmission thresholds to enhance secrecy rates using physical channel characteristics.
- Integrated Security Module for Remote Input Data Protection
An integrated security module encodes input data before transmission over insecure wireless networks.
- Rectangular Power Spectral Density Orthogonal Signals
Haar orthogonal functions generate discrete signals with rectangular power spectral densities for efficient communication transmission.
- Cipher Structure Resistance Evaluation Method
A cipher evaluation method determines generalized minimum non-zero symbols to assess cryptographic strength.
- Cyclic Prefix Determination for OFDM Channel Estimation
A receiver detects cyclic prefix length to accelerate synchronization and cell search procedures in cellular networks.
- OFDM Subcarrier Pairing for ICI and PAPR Reduction
Pairing adjacent OFDM subcarriers modifies symbol sets to increase frequency separation.
- MIMO Beamforming Orthogonal Vector Selection
A MIMO beamforming apparatus selects orthogonal transmitting vectors to distribute power equally across antennas.
- Bidirectional Signal Transmission via Replica Channel Synthesis
A transmitting circuit replicates the channel to synthesize signals for simultaneous bidirectional data exchange.
- OFDMA 2-Symbol Interval Windowing for Adjacent Band Interference Reduction
A 2-symbol interval windowing process overlaps previous and current symbol signals to transmit OFDMA data.