Time Hopping Apparatus for UWB Co-band Interference Reduction
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Solution Overview
Problem
Ultra-wideband (UWB) communication systems face interference issues due to high sampling rates and frequencies, which can lead to co-band interference between heterogeneous communication systems and homogeneous devices, affecting signal transmission reliability.
Innovation Solution
A time hopping apparatus calculates differences in time hopping patterns between adjacent symbol transmission periods and adjusts positions based on these differences, transmitting control signals with offsets to minimize interference by varying adjustments according to frequency accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If time hopping is performed in UWB communication to reduce co-band interference, then interference between heterogeneous communication systems is reduced, but signal transmission reliability deteriorates due to difficulty in tracking synchronization between adjacent symbol transmission periods
Solution Approach 1:
The patent applies preliminary action by calculating the time hopping pattern difference between adjacent symbol transmission periods in advance, before actual signal transmission occurs. The transmitting apparatus determines the difference value and communicates it to the receiving apparatus, enabling the receiver to pre-establish synchronization tracking parameters without needing to track during transmission, thus resolving the reliability issue while maintaining interference reduction benefits
Solution Approach 2:
The patent introduces an intermediary mechanism - the time hopping pattern difference value - that mediates between the transmitting and receiving apparatuses. This difference value acts as a reference signal that enables the receiving apparatus to accurately track synchronization without directly monitoring the transmitted signal, thereby maintaining reliability while allowing time hopping to reduce interference
2Productivity
If high sampling rate and high operating frequency are used in UWB communication to achieve high-speed data transmission, then data transmission speed is improved, but co-band interference increases between heterogeneous communication systems
Solution Approach 1:
The patent applies periodic action by implementing time hopping patterns that periodically shift the transmission timing of UWB signals. Instead of continuous transmission at fixed intervals, the system uses periodic time hopping sequences that spread transmissions across different time slots, reducing peak interference levels while maintaining average data transmission rate through the periodic structure of the hopping patterns
Data Source
AI summary
A signal transmission method and apparatus are provided. A signal transmission apparatus may include a time hopping apparatus configured to calculate a difference between values of time hopping patterns corresponding to adjacent symbol transmission periods, and to determine, based on the calculated difference, whether a position of a time hopping pattern corresponding to one of the adjacent symbol transmission periods is to be adjusted, and a transmitter configured to transmit a signal in the adjacent symbol transmission periods based on a determination result obtained by the time hopping apparatus. Additionally, a related signal reception apparatus is provided.