Wireless Video Transceiver Digital Gain Control Power Stability
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Solution Overview
Problem
Current wireless video transmission systems face challenges in maintaining stable transmission power due to energy variations across different video frames and blocks, which can lead to poor signal quality and data integrity, especially in high-bandwidth applications like WHDI, where crest factor and peak-to-average ratio issues affect amplifier and converter performance.
Innovation Solution
The implementation of a wireless video source transceiver with digital gain control logic that estimates and adjusts energy levels for video transmission blocks to maintain a constant power output, using a video block energy estimator to determine a common energy adjustment factor for sets of blocks, and including indicators for reverse adjustments at the receiver to ensure stable transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If digital gain control logic adjusts energy levels for each video transmission block to maintain constant power output, then transmission power stability is improved, but device complexity increases
Solution Approach 1:
The video block energy estimator estimates the energy level of upcoming video transmission blocks before they are transmitted. This preliminary estimation allows the digital gain control logic to pre-calculate appropriate energy adjustment factors, enabling constant power output without requiring complex real-time adjustments during transmission.
Solution Approach 2:
The system replaces analog power control mechanisms with digital gain control logic that operates on digitally estimated energy levels. This substitution simplifies the control architecture by using digital signal processing instead of complex analog circuitry, reducing device complexity while maintaining transmission power stability.
2Reliability
If energy adjustment factors are applied to compensate for video data peaks, then amplifier and converter performance is improved, but processing complexity increases
Solution Approach 1:
The system dynamically changes the energy level parameter of video transmission blocks by applying calculated energy adjustment factors. This parameter modification compensates for peaks in video data, ensuring that amplifiers and converters operate within optimal performance ranges without requiring complex hardware modifications.
Solution Approach 2:
The video block energy estimator provides feedback about the energy content of video blocks to the digital gain control logic. This feedback mechanism enables the system to automatically adjust energy levels based on actual video content characteristics, improving amplifier and converter performance through adaptive control rather than fixed complex processing.
3Speed
If multiple antennas are used in MIMO arrangement to increase bandwidth, then data transmission speed is improved, but system complexity increases
Solution Approach 1:
The patent combines multiple transmission paths in a MIMO (Multiple-Input Multiple-Output) arrangement, merging the capabilities of multiple antennas to achieve higher data transmission speeds. By coordinating multiple antennas working together rather than separately, the system achieves speed improvements while managing complexity through unified control architecture.
Data Source
AI summary
Disclosed are methods, circuits, devices systems for wireless communication of video information. According to some embodiments, an energy level of one or a group of transmit video block(s) to be transmitted as part of a wireless transmission frame may be adjusted so at to maintain a substantially constant transmission power (e.g. within a range of transmission power levels).