Radio Receiver Packet Detection and Decoding Separation
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Solution Overview
Problem
The computing power required in data receivers for detecting and decoding multiple partial data packets transmitted simultaneously or over time increases significantly, especially when a large number of data transmitters are involved in a radio transmission system using a time-frequency hopping pattern.
Innovation Solution
The partial data packets are detected and decoded separately, with a data receiver employing a detector and decoder that process the packets independently, utilizing a polyphase filter bank and synchronization sequences to reduce computational load, and a signal ring memory to manage signal delay and processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple partial data packets are transmitted simultaneously or overlapping in time by multiple data senders, then the system throughput and transmission efficiency are improved, but the computing power required in the data receiver for detection and decoding increases considerably
Solution Approach 1:
The detection process is segmented into frequency-specific stages. The receiver first detects packets on individual frequency channels separately, then combines results. This divides the computationally intensive broadband detection into manageable frequency-specific tasks, reducing the overall computational burden while maintaining the ability to handle multiple simultaneous transmissions
Solution Approach 2:
The patent introduces a frequency-domain dimension to the detection process by using polyphase filter banks to decompose the broadband signal into multiple frequency sub-channels. This dimensional transformation allows parallel processing of different frequency components, improving throughput while distributing computational load across frequency domains rather than requiring simultaneous processing of all packets in time domain
2Reliability
If the data receiver processes and decodes all received partial data packets, then complete data recovery is achieved, but processing delays increase
Solution Approach 1:
The receiver performs partial decoding by attempting to reconstruct complete data packets from detected partial packets before committing to full decoding. If sufficient partial packets are detected to form a complete original packet, decoding proceeds; otherwise, the receiver moves on without exhaustive processing, reducing delay while maintaining reliability through selective complete packet recovery
Solution Approach 2:
The polyphase filter bank performs preliminary frequency-domain decomposition and packet detection before full decoding. Synchronization sequences are detected and correlated in advance to identify packet boundaries and frequencies, preparing the data structure for efficient subsequent decoding operations, thereby reducing overall processing delay
Data Source
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AI summary
Illustrative embodiments of the invention provide a data receiver, wherein the data receiver is designed to receive a broadband signal, wherein the broadband signal has at least two partial data packets which are distributed in the time and/or frequency domains, wherein the data receiver is designed to detect the at least two partial data packets in the broadband signal, and to provide at least one detection parameter for the detected partial data packets, wherein the data receiver is designed to perform a decoding of the detected partial data packets using the at least one detection parameter, wherein the data receiver is designed to carry out or process the detection and the decoding separately from one another.