Wireless Receiver Decoding with Variable Leading Bit Orthogonal Codes
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Solution Overview
Problem
Wireless receiver systems face challenges in processing high code rate signals due to the need for hardware and software elements that operate at higher speeds, which can be exacerbated by advancements in wireless communication systems and next-generation designs.
Innovation Solution
A method and system utilizing a variable leading bit orthogonal coding scheme to encode and decode analog signals, allowing for offline and online synchronization, which reduces the processing speed requirements by adjusting clock delays and masking orthogonal codes based on power thresholds.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If high code rate encoding is used to combine multiple analog signals into a single signal, then hardware resource sharing and interference resistance are improved, but processing speed requirements and hardware complexity increase
Solution Approach 1:
The patent segments the high code rate signal processing into two distinct phases: an offline synchronization phase that occurs before signal transmission, and an online processing phase that occurs during normal operation. By pre-establishing synchronization relationships offline, the patent reduces the processing complexity and speed requirements during online operation, allowing standard hardware to handle high code rate signals effectively.
Solution Approach 2:
The patent performs synchronization operations in advance (offline) before the actual signal transmission and processing. This preliminary action includes pre-calculating and storing synchronization parameters, which eliminates the need for complex real-time synchronization calculations during high-speed online processing, thereby reducing processing speed requirements.
2Productivity
If high sampling rate ADCs are deployed to handle high code rate signals, then signal processing capability is improved, but power consumption and hardware strain increase
Solution Approach 1:
The patent changes the operational parameters of the ADC by using a lower sampling rate than would traditionally be required for high code rate signals. This is made possible by the offline synchronization preprocessing, which prepares the signal in such a way that accurate processing can be achieved with reduced sampling rates, thereby lowering power consumption.
Solution Approach 2:
The patent extracts the computationally intensive synchronization operations from the real-time signal processing path and moves them to an offline preprocessing stage. This extraction allows the online processing to use simpler, lower-power ADC operations while still achieving the same overall processing capability.
3Measurement precision
If synchronization operations are performed in real-time, then signal accuracy is maintained, but processing delay and complexity increase
Solution Approach 1:
The patent performs all synchronization operations in advance during an offline phase, before signals are transmitted or processed in real-time. This preliminary synchronization establishes all necessary timing relationships and parameters beforehand, eliminating the need for time-consuming real-time synchronization calculations and reducing processing delay.
Solution Approach 2:
The patent divides the synchronization process into offline preparation and online execution phases. The offline phase handles complex synchronization calculations that require time, while the online phase only needs to apply pre-determined synchronization parameters, thereby maintaining signal accuracy without real-time processing delays.
Data Source
AI summary
The disclosed systems, structures, and methods are directed to a wireless receiver. The configurations presented herein employ a signal encoder configured to encode a plurality of received analog signals into a single encoded analog composite signal, in accordance with a variable leading bit orthogonal coding scheme, an analog-to-digital converter (ADC) configured to convert the single encoded analog composite signal into a single encoded digital composite signal containing constituent digital signals, a synchronization module configured to provide the variable leading bit orthogonal coding scheme to the signal encoder, and a signal decoder configured to decode the single encoded digital composite signal in accordance with the variable leading bit orthogonal coding scheme, to output a plurality of digital signals containing the desired information content of the received plurality of analog signals.