Multi-Antenna Polar Code Decoding for Reliable Control Channels
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in maintaining high reliability of control channels, particularly in poor wireless channels, due to degraded reliability of control channels coded using polar codes.
Innovation Solution
A wireless communication terminal employing multiple antennas to receive signals, combining log likelihood ratio (LLR) values of reception codewords, and performing successive cancellation (SC) decoding bit by bit using a combined LLR value to enhance decoding reliability and improve communication stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If polar codes are used for control channel coding, then encoding speed and decoding complexity are improved, but reliability of control channels in poor wireless channels deteriorates
Solution Approach 1:
The patent combines log-likelihood ratio (LLR) values from multiple reception codewords obtained through different antennas to perform successive cancellation decoding. This merging of information from multiple channels improves the reliability of control channel decoding in poor wireless conditions while maintaining the efficiency of polar code structure.
Solution Approach 2:
The patent introduces a spatial dimension by utilizing multiple antennas for receiving control channels. Instead of relying on a single transmission path, the system receives signals through multiple spatial channels, adding diversity that enhances reliability without increasing decoding complexity.
2Reliability
If multiple antennas are used to receive control channels, then reliability of control channels is improved, but device complexity increases
Solution Approach 1:
The patent combines log-likelihood ratio (LLR) values from multiple reception codewords obtained through different antennas to perform successive cancellation decoding. This merging of information from multiple channels improves the reliability of control channel decoding in poor wireless conditions while maintaining the efficiency of polar code structure.
3Measurement precision
If LLR values from multiple antennas are combined, then decoding performance is improved, but processing complexity increases
Solution Approach 1:
The patent combines log-likelihood ratio (LLR) values from multiple reception codewords obtained through different antennas to perform successive cancellation decoding. This merging of information from multiple channels improves the reliability of control channel decoding in poor wireless conditions while maintaining the efficiency of polar code structure.
Data Source
AI summary
Provided are a wireless communication terminal, a method of decoding a polar code, and a decoding module. The wireless communication terminal includes first and second antennas configured to respectively receive one signal transmitted from a transmitting-side device via different channels, a communication module configured to output first and second reception codewords by performing digital conversion on the signals respectively received through the first and second antennas and demodulating the signals, and a processor configured to combine log likelihood ratio (LLR) values of the first and second reception codewords with each other and sequentially perform successive cancellation (SC) decoding (SCD) bit by bit using a combined LLR value for estimating a next LLR value.