Radio-Over-Fibre TRIZ Cases
- Digital Optical Fiber Signal Control System
A digital optical fiber-based distributed signal control system manages wireless access and detection modules to generate comprehensive management signals.
- Distributed Device Testing Circuit for On-Site Fault Isolation
Integrated testing circuit generates and loops back test signals to verify communication paths within distributed device systems.
- Multiscale Sampling for Electro-Optic Receiver Linearity
Multiscale sampling divides signals into scaled copies and combines them digitally to correct nonlinear distortions in analog photonic links.
- Auto-detecting AxC Mapping in CPRI Links
An auto-detection system identifies antenna container mappings within a CPRI link using raw data analysis.
- Upsampling Optical Transmitter With Digital Interpolation
A digital signal processor applies interpolation circuits to tune bandwidth and reduce noise susceptibility in wavelength division multiplexed systems.
- Fiber-to-coaxial tap device for HFC network point-to-point conversion
A fiber-to-coaxial tap device converts RF signals to digital packets for concurrent transmission.
- Network Impairment Detection via Node Health Evaluation
Node evaluation unit calculates health values from performance metrics to detect network impairments.
- LTE Ingress Characterization via PNM Metrics
Processor calculates proactive network maintenance metrics from adjacent channel management information bases to detect interfering wireless signal ingress.
- Chromatic Dispersion Compensator Anti-Aliasing Filter
A chromatic dispersion compensator transforms digital signal samples into the frequency domain to remove aliasing frequencies before resampling.
- Duobinary Modulation Optical Subcarrier Multiplexing Dispersion
Analog mixers combine duobinary signals with local oscillators to generate optical subcarriers for dense wavelength division multiplexing.
- Optical Fiber Distributed Antenna System Monitoring
Central management system monitors head-end unit and remote antenna units to resolve configuration complexity in building wireless networks.
- RoF Node EML Frequency Generation Reduces Complexity
Electroabsorption modulated lasers generate high-frequency signals via optical coupling, eliminating mixer complexity and reducing transmission losses.
- Avalanche Photodiode Voltage Control for Optical Receiver Channel Uniformity
An avalanche photodiode adjusts its multiplication factor via applied voltage to equalize output currents across multiple signal channels.
- Free-Space Optical Links for Distributed Antenna Systems
Free-space optical links replace physical cabling in distributed communications systems to simplify infrastructure deployment.
- Phased Array Antenna Beam Steering Using Hybrid Optical Delay
A hybrid optical control mechanism steers phased array antenna beams using tunable lasers and chromatic dispersion waveguides.