Wireless Transmitter Variable Rate Switching via Auxiliary Syncword
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional wireless remote control devices face challenges in switching transmission rates, particularly for applications requiring higher rates like 4 Mbps or 6 Mbps, which conflicts with sensitivity needs, making it difficult to meet demands for image signal transmission in devices such as UAVs.
Innovation Solution
A wireless transmitter and receiver system that includes a frame generator producing frames with an auxiliary preamble, syncword, guard, and error correction, and a modulator that adjusts transmission rates, with the rate indicated in the auxiliary syncword, allowing for variable transmission rates and automatic switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the transmission rate is increased to meet image signal transmission demands, then the throughput is improved, but the sensitivity deteriorates
Solution Approach 1:
The patent implements dynamic transmission rate switching by introducing an auxiliary preamble and auxiliary syncword that enable the receiver to automatically detect and adapt to different transmission rates (1Mbps, 4Mbps, or 6Mbps) without manual intervention. This dynamic adaptation allows the system to optimize between sensitivity and throughput based on actual transmission needs
Solution Approach 2:
The patent segments the transmission frame into two distinct parts: a first frame structure with fixed 1Mbps transmission rate containing auxiliary preamble and auxiliary syncword for sensitivity-critical control signals, and a second frame structure that can operate at higher rates (4Mbps or 6Mbps) for image signal transmission. This segmentation allows different parts of the communication to operate at optimal rates for their specific requirements
2Manufacturing precision
If the transmission rate is manually switched to higher rates, then the image signal quality is improved, but the operation complexity increases and automatic switching becomes necessary
Solution Approach 1:
The patent enables the system to automatically determine and switch transmission rates without user intervention. The auxiliary syncword contains rate indication information that allows the receiver to autonomously identify the current transmission rate and switch between rates as needed, eliminating the need for manual user configuration and operation
Solution Approach 2:
The patent incorporates rate indication information in advance within the auxiliary syncword of each frame. This preliminary encoding of transmission rate information allows the receiver to prepare and switch to the appropriate demodulation rate before actual data reception, enabling seamless automatic rate adaptation without interrupting the transmission flow
Data Source
AI summary
A wireless transmitter, comprises a frame generator configured to generate a frame by including an auxiliary preamble, an auxiliary syncword, a guard, a preamble, an address, a packet control, a payload and a CRC; a modulator communicatively coupled to the frame generator and configured to modulate the frame according to a variable transmission rate and include the transmission rate in the auxiliary syncword; and a RF front end communicatively coupled to the modulator and configured to transmit the modulated signal to a receiver.