Wireless Repeater Digital Signal Processing Programmable Selectivity

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional wireless communication repeaters are large, expensive, and difficult to modify, making them inefficient for extending cell phone network coverage in areas with limited signal strength, as they rely on costly and complex analog RF filters.

Innovation Solution

Implementing a bi-directional wireless repeater system with digital signal processing (DSP) that downconverts and digitizes telephony bands, allowing for programmable filtering and adaptive cancellation, enabling arbitrary selectivity and cost-effective operation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If conventional analog RF filters are used in wireless repeaters, then filtering capability is provided, but the repeater becomes large, expensive and difficult to modify

Engineering Contradiction:

Improveease of modificationVSAvoidcomplexity of analog RF filter circuitry

Core Design Contradiction:

Ease of manufactureVSDevice complexity

Solution Approach 1:

The patent replaces mechanical/analog RF filter circuitry with digital signal processing (DSP) systems. The analog filtering function is substituted by digital filtering algorithms implemented on programmable processors, eliminating the need for complex physical filter components and enabling software-based filter configuration.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent enables dynamic adjustment of filtering parameters through software control. Filter characteristics such as passband, stopband, and transition bandwidth can be modified by changing digital filter coefficients without altering the physical hardware, providing adaptability to different frequency allocations and interference conditions.

Inventive Principle:

Principle #35Parameter changes

2Reliability

If conventional wireless repeaters are deployed to extend coverage in areas with limited signal strength, then signal coverage is improved, but the repeaters become large and expensive

Engineering Contradiction:

Improvesignal coverage extensionVSAvoidsize of repeater

Core Design Contradiction:

ReliabilityVSWeight of stationary object

Solution Approach 1:

The patent eliminates bulky analog RF filter components by implementing digital filtering in software. This substitution dramatically reduces the physical size of the repeater while maintaining or improving filtering performance, enabling compact deployments in various locations.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent implements a programmable repeater platform that can be configured for different frequency bands and filtering requirements through software. This multi-functionality allows a single compact hardware platform to serve multiple deployment scenarios, reducing the need for multiple specialized devices.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS8290430B2Wireless repeater with arbitary programmable selectivity

Publication Date: 2012.10.16 POWERBRIDGE IP PROTECTION LLC

AI summary

The invention relates to wireless repeater systems and methods. In embodiments, such systems and methods involve receiving a wireless transmission signal; and processing the wireless transmission signal using a digital signal processing facility (DSP); wherein the DSP is adapted to filter at least one sub-band of the wireless transmission signal using a digital bandpass filter.