Multimode Radio Receiver With Shared Digital Backend
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Solution Overview
Problem
Multi-mode wireless devices face challenges in conserving space and power due to the need to support multiple radio communication standards, as each radio chain requires separate components and consumes power even when deactivated, limiting the number of modes that can be included.
Innovation Solution
A receiver module with multiple analog RF front end modules, each supporting a different mode, and a single digital backend module that adjusts its processing characteristics based on factors specific to the selected mode, allowing the device to adapt to various radio modes while minimizing component count and power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate receiver modules are used for each radio mode, then each mode can be supported with dedicated components, but the device size and power consumption increase
Solution Approach 1:
The patent combines multiple radio mode support capabilities into a single receiver module by integrating multiple front end modules (each supporting different radio modes) that share common digital baseband processing resources. This merging approach allows the device to support multiple radio modes without requiring separate complete receiver chains for each mode, thereby reducing overall device size while maintaining versatility.
Solution Approach 2:
The digital baseband processing module is designed to be universal and multi-functional, capable of processing signals from different radio modes (GSM, CDMA, WCDMA, etc.) through a single interface. This universal processing core can be configured to handle various radio access technologies, eliminating the need for separate dedicated processing modules for each mode and reducing the overall device footprint.
2Adaptability or versatility
If separate receiver modules are used for each radio mode, then each mode can be supported with dedicated components, but power consumption increases even when modes are deactivated
Solution Approach 1:
By merging multiple front end modules into a single receiver architecture that shares common digital baseband processing, the patent enables power-saving mechanisms where only the necessary front end module and processing resources are activated for the currently used radio mode. Unused modules can be fully deactivated, preventing the continuous power consumption that would occur with separate always-on receiver modules.
Solution Approach 2:
The receiver module employs dynamic configuration where the digital baseband processing module can be dynamically allocated to handle different radio modes as needed. This dynamic resource allocation allows the system to activate only the processing resources required for the current radio mode, rather than maintaining dedicated always-on processing chains for all supported modes, thereby reducing overall power consumption.
3Adaptability or versatility
If multiple radio modes are supported with separate modules, then comprehensive coverage is achieved, but the number of components increases
Solution Approach 1:
The patent merges multiple front end modules that support different radio access technologies (GSM, CDMA, WCDMA, etc.) into a single integrated receiver module. These front end modules share common digital baseband processing resources, signal conditioning circuits, and other functional blocks, thereby achieving comprehensive multi-mode support without proportionally increasing the total component count.
Solution Approach 2:
The digital baseband processing module is designed as a universal platform that can process signals from multiple radio access technologies through a single interface. This universal processor replaces what would traditionally require separate dedicated processing modules for each radio mode, significantly reducing the number of components needed while maintaining support for diverse communication standards.
Data Source
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AI summary
A receiver for a multi-mode wireless device is provided. The receiver has multiple analog RF front end modules, with each module supporting a different mode of operation. The receiver has a single digital backend module for generating a digital baseband signal. A controller selects one of the available RF modules to use, and the selected RF module provides an analog communication signal to the digital backend. Each available mode has an associated set of factors. When a particular mode is selected, the set of factors associated with the selected mode is provided to the digital backend. The digital backend uses these factors to adjust the processing characteristics of its components, such as its analog to digital converter, filters, and gain controller. In this way, the single digital backend is adaptable to the requirements of each of the available radio modes.