Polar-Coded Control Information With Joint CRC Verification
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Solution Overview
Problem
Current wireless communication networks face challenges in efficiently transmitting control information due to high cyclic redundancy check (CRC) overhead, which affects the reliability and performance of polar codes in noisy channels, particularly in future wireless communication networks beyond LTE.
Innovation Solution
The implementation of polar coding techniques that incorporate combined CRC information, where the number of CRC bits is optimized based on the list size for successive-cancellation list (SCL) decoding, reducing CRC overhead and improving error correction capabilities by jointly decoding and verifying control information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional CRC codes are used for control information transmission, then error detection capability is provided, but CRC overhead is high which reduces transmission efficiency
Solution Approach 1:
The patent combines CRC bits with frozen bits in polar codes into a unified structure. The CRC bits are integrated into the polar code encoding framework, where they serve dual purposes: traditional error detection and acting as frozen bits for the successive cancellation list decoding process. This merging eliminates separate CRC overhead while maintaining error detection capability through the joint decoding mechanism.
2Reliability
If more CRC bits are added to improve error detection, then reliability increases, but the overhead and resource consumption increase
Solution Approach 1:
The CRC bits in the patent perform multiple functions simultaneously: (1) traditional cyclic redundancy check for error detection, (2) frozen bits that guide the successive cancellation list decoding process, and (3) indicators for list size management. This multi-functionality allows the same bits to contribute to multiple aspects of reliable transmission without increasing total overhead, as each bit serves several purposes in the polar code framework.
3Reliability
If polar codes are used for control information transmission, then error correction performance is improved, but CRC overhead affects the overall efficiency
Solution Approach 1:
The patent merges the CRC function with the polar code frozen bits structure. Instead of appending separate CRC bits to the encoded polar code, the CRC bits are embedded within the polar code block as frozen bits. This integration allows the decoder to use the same bits for both polar code decoding and error detection, eliminating redundant overhead and improving transmission efficiency while maintaining the strong error correction capabilities of polar codes.
Data Source
AI summary
Aspects of the disclosure relate to wireless communication systems configured to provide techniques for polar coding control information together with combined cyclic redundancy check (CRC) information. The combined CRC information may include a number of CRC bits selected to jointly decode and verify the control information to reduce the CRC overhead.