Digital Signal Booster for Selective Multi-Band Carrier Amplification
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Solution Overview
Problem
Existing mobile telecommunication signal boosters face challenges with high complexity, inflexibility, and interference due to the need for analog components and limited support for multiple frequency bands, especially as wireless networks evolve with increasing cellular frequency bands and operators.
Innovation Solution
A digital signal processing module processes wireless signals without prior downconversion, allowing flexible and efficient selective amplification of carrier channels across multiple frequency bands, reducing noise and interference by using digital filters, gain control, and spectrum analysis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If analog components are used for selective amplification of carrier channels, then the signal amplification can be achieved, but the device complexity increases and flexibility is reduced
Solution Approach 1:
The patent replaces analog signal processing components with digital signal processing. The digital signal processor receives analog signals from the donor antenna, converts them to digital signals, processes them selectively to amplify specific carrier channels, and then converts back to analog signals for retransmission. This substitution of mechanical/analog systems with digital systems reduces component complexity while maintaining amplification capability and improving flexibility.
Solution Approach 2:
The digital signal processor serves multiple functions: signal conversion, selective amplification, filtering, and control. A single digital processing unit can handle multiple carrier channels and frequency bands, eliminating the need for separate analog amplifiers for each channel. This multi-functionality reduces overall device complexity while maintaining reliable signal amplification.
2Object-affected harmful factors
If carrier specific signal booster is used to selectively amplify frequencies from a single mobile network operator, then interference is reduced, but the system complexity increases and adaptability to multiple operators is limited
Solution Approach 1:
The digital signal processor enables dynamic configuration of which carrier channels to amplify. The system can adaptively select and amplify channels from different mobile network operators based on current network conditions and requirements. This dynamic capability allows the same hardware to serve multiple operators without requiring separate physical systems for each operator, reducing overall complexity while maintaining interference reduction benefits.
Solution Approach 2:
The system changes operational parameters (which channels to amplify, gain levels, filtering characteristics) through digital control rather than requiring physical reconfiguration. This allows flexible adaptation to different operators and network conditions using software or control algorithms, maintaining low interference while avoiding the complexity of multiple dedicated analog systems.
3Adaptability or versatility
If wide-band signal booster is used to amplify all frequencies from cell phone carriers, then coverage is maximized, but interference risk increases and system gain is limited
Solution Approach 1:
Instead of amplifying all frequencies uniformly (excessive action), the digital signal processor selectively amplifies only specific carrier channels that are needed (partial action). The system can identify which channels require amplification based on signal strength measurements and network conditions, applying amplification only where necessary. This partial amplification approach reduces overall interference risk while maintaining effective coverage for active channels.
Solution Approach 2:
The system incorporates feedback mechanisms to monitor signal conditions and adjust amplification accordingly. By continuously measuring signal strength and quality, the digital signal processor can dynamically modify which channels are amplified and at what gain levels. This feedback-controlled selective amplification maintains versatility across multiple frequencies while minimizing interference by avoiding unnecessary amplification of channels that are already sufficiently strong.
4Measurement precision
If analog downconversion is performed before digital signal processing, then signal to noise ratio is improved, but device complexity increases and flexibility is reduced
Solution Approach 1:
The patent extracts the downconversion function from the traditional analog domain and implements it in the digital domain. The digital signal processor can perform frequency translation and filtering operations directly on digital signals, eliminating the need for separate analog downconversion stages. This extraction of the downconversion function allows the system to achieve similar signal quality improvements without the complexity and fixed configuration limitations of analog components.
Data Source
Figure 1
AI summary
There is provided a mobile telecommunication signal booster (10) configured to selectively amplify a wireless mobile telecommunication signal. The mobile telecommunication signal booster (10) comprises a digital signal processing module (100) with at least one downlink digital signal processing submodule (131) configured to receive one or more digitized downlink signals from one or more of the downlink analog-to-digital converters (112) and digitally process the signal of at least three selected downlink carrier channels of the one or more digitized downlink signals. The frequency of the at least three selected downlink carrier channels received at one or more of the downlink analog-to-digital converters (112) is identical to the frequency of the corresponding downlink carrier channels received at the donor antenna (20).