MIMO Repeater Diversity Antenna Signal Isolation
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Solution Overview
Problem
Current signal boosters and repeaters face challenges in effectively amplifying and filtering wireless communication signals across various frequency bands, particularly in areas with weak signal strength, and may not comply with regulatory noise and gain limits, affecting the quality of wireless communication.
Innovation Solution
The development of a bi-directional multiple-input multiple-output (MIMO) repeater system that includes a diversity repeater with multiple sub-repeaters, separate antennas for increased spatial isolation, and advanced filtering and amplification techniques to enhance signal diversity, bitrate, and error rates, while automatically adjusting gain and noise power to comply with regulatory standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If signal boosters amplify signals across various frequency bands, then signal quality in weak signal areas is improved, but regulatory noise and gain limits are violated
Solution Approach 1:
The system divides the frequency spectrum into multiple bands (e.g., 700 MHz, 850 MHz, 1900 MHz, 2100 MHz) and processes each band separately through dedicated amplification and filtering paths. This segmentation allows independent control of gain and noise parameters for each frequency band, enabling compliance with regulatory limits while maintaining signal quality across all bands.
Solution Approach 2:
The patent implements frequency-selective filtering and amplification where each frequency band receives customized processing parameters. Different gain levels, noise figures, and filtering characteristics are applied locally to each band based on its specific requirements and regulatory constraints, rather than using uniform parameters across all frequencies.
2Reliability
If traditional repeaters use single antennas, then device complexity is reduced, but signal diversity and spatial isolation are insufficient
Solution Approach 1:
The patent combines multiple antenna elements (at least two antennas) into a unified MIMO repeater system that processes multiple frequency bands simultaneously. The multiple antennas provide spatial diversity and isolation while being integrated into a single device with coordinated signal processing across all frequency bands, achieving both diversity benefits and system integration.
Solution Approach 2:
The system transitions from single-antenna spatial configuration to multi-antenna three-dimensional spatial arrangement, utilizing vertical and horizontal separation to achieve spatial isolation between transmit and receive paths. This dimensional expansion enables MIMO functionality and improved signal diversity without proportionally increasing device complexity.
3Reliability
If signal amplification is increased to improve coverage, then wireless communication quality is enhanced, but compliance with regulatory standards deteriorates
Solution Approach 1:
The system implements dynamic gain control and automatic level control (ALC) mechanisms that continuously adjust amplification parameters based on received signal strength, network conditions, and regulatory requirements. The gain for each frequency band can be dynamically modified to maintain optimal communication quality while staying within regulatory limits for noise and gain.
Solution Approach 2:
The patent incorporates feedback loops that monitor signal quality metrics, noise levels, and gain parameters across all frequency bands. This feedback information is used to automatically adjust amplification and filtering parameters in real-time, ensuring both communication quality and regulatory compliance are maintained under varying operating conditions.
Data Source
AI summary
Technology for a diversity bi-directional repeater is disclosed. The diversity bi-directional repeater can include a first interface port, a second interface port, a 1st first-direction signal amplification and filtering path communicatively coupled between the first interface port and the second interface port, and a 1st second direction signal amplification and filtering path communicatively coupled between the first interface port and the second interface port. The diversity bi-directional repeater can further include a third interface port, a fourth interface port, and a 2nd second direction signal amplification and filtering path communicatively coupled between the third interface port and the fourth interface port.