Reconfigurable Signal Processing Circuit for Multi-Standard Encoding
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Solution Overview
Problem
Conventional signal processing circuits for communication standards like W-CDMA and IEEE802.11 require separate fixed circuits for scramblers and CRC generators due to differences in processing, necessitating hardware dedicated to individual standards, limiting flexibility and efficiency.
Innovation Solution
A signal processing circuit comprising basic circuits with arithmetic and selection functions, allowing for different operations by controlling the output of input signals through selection circuits, enabling the same circuit to perform multiple functions such as scrambler, CRC generator, convolutional encoder, and linear feedback shift register operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate fixed circuits are used for scrambler and CRC generator, then each circuit can be optimized for its specific function, but the device complexity increases and adaptability to different communication standards decreases
Solution Approach 1:
The patent combines the scrambler and CRC generator into a single integrated circuit that can perform both functions. The circuit uses a unified structure with selection logic that can switch between scrambler operation and CRC generator operation, eliminating the need for separate dedicated hardware for each function while maintaining the reliability of both operations.
Solution Approach 2:
The patent creates a universal circuit capable of performing multiple functions (scrambler and CRC generator) through a single hardware configuration. The circuit includes control logic that can configure the same physical components to operate in different modes depending on the required communication standard, thereby reducing device complexity while maintaining function-specific optimization.
2Reliability
If separate fixed circuits are used for different communication standards, then each standard can have dedicated hardware, but the adaptability to multiple standards decreases
Solution Approach 1:
The patent implements a dynamic configuration capability within the circuit, allowing it to adapt its operation mode based on the required communication standard. The circuit includes control logic that can reconfigure the same physical components to match different standard requirements, enabling a single circuit to maintain standard-specific performance while being adaptable to multiple standards.
3Reliability
If hardware is dedicated to individual communication standards, then each standard can be optimized, but the productivity and efficiency of the system decreases
Solution Approach 1:
The patent merges multiple standard-specific functions into a single configurable circuit, improving productivity by reducing the total number of hardware components that need to be instantiated and managed. The unified circuit can be configured for different standards as needed, maintaining optimization for each standard while improving overall system efficiency through resource consolidation.
Data Source
AI summary
A signal processing circuit is configured by connecting a plurality of basic circuits connected in series, each of the basic circuits comprising an arithmetic circuit subjecting a first input signal and a second input signal to a signal processing; a first selection circuit outputting the first input signal or an output signal of the arithmetic circuit; and a second selection circuit outputting the second input signal or an output signal of the arithmetic circuit, so as to make it possible to change operations of the circuit as a whole by properly making a selection on which signal should be output with the aid of the first and second selection circuits, and to execute different signal processing on a single circuit depending on the selection.