RF Transmitter Clock Synchronization for Host Data Rate Matching
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Solution Overview
Problem
Conventional RF communication systems face challenges with bandwidth limitations, signal quality, and susceptibility to interference, while digital RF SDR systems struggle with unsynchronized transmission rates between data hosts and RF transmitters, leading to issues like data loss and underutilization due to mismatched processing rates.
Innovation Solution
Synchronize the transmission rate of data from a data host to an RF transmitter by obtaining and adjusting to the RF transmitter's clock time, using precise timing protocols to generate a clock ratio and adjust the data transmission rate accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If conventional RF communication systems are used, then implementation is simple, but bandwidth is limited and signal quality deteriorates
Solution Approach 1:
The patent replaces conventional analog RF communication systems with digital RF SDR systems. Instead of using analog modulators and demodulators, the system uses digital signal processing to modulate and demodulate signals, enabling higher bandwidth and improved signal quality while maintaining implementation feasibility through software-based approaches
2Quantity of substance
If digital RF SDR systems are used, then bandwidth and signal quality improve, but transmission rate synchronization becomes difficult
Solution Approach 1:
The patent implements a feedback mechanism where the RF transmitter sends timing information back to the data host. The data host uses this feedback to adjust its transmission rate dynamically, ensuring synchronization with the RF transmitter's processing rate and preventing data loss without requiring complex hardware synchronization circuits
3Productivity
If data transmission rate is increased, then productivity improves, but data loss increases due to unsynchronized transmission
Solution Approach 1:
The patent makes the transmission rate dynamic by allowing the data host to adjust its transmission rate in real-time based on feedback from the RF transmitter. This dynamic adjustment ensures that the transmission rate adapts to the RF transmitter's processing capability, maximizing productivity while preventing data loss through continuous synchronization
4Loss of information
If memory buffer capacity is increased, then data loss reduces, but device complexity and cost increase
Solution Approach 1:
The patent applies preliminary action by having the RF transmitter provide timing information in advance, allowing the data host to pre-adjust its transmission rate before data loss occurs. This proactive synchronization eliminates the need for large memory buffers to compensate for rate mismatches, reducing device complexity while preventing data loss
Data Source
AI summary
A method for synchronizing data transmission rates of a data host and a radio frequency (RF) transmitter comprises: transmitting a time request from the data host at a first time of a data host clock to the RF transmitter; receiving, by the data host, a time response from the RF transmitter comprising a first time of a RF transmitter clock associated with when the RF transmitter received the time request; generating, by the data host, an operating clock ratio between the data host clock and the RF transmitter clock based on the first time of the data host clock and the first time of the RF transmitter clock; generating, by the data host, an estimate of a second clock time of the RF transmitter clock based on the operating clock ratio; and transmitting data from the data host to the RF transmitter at a data transmission rate.