Polar Codeword Transmission Using Hamming Weight for Low-Latency Decoding
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Solution Overview
Problem
Current LTE Turbo codes face challenges with high error rates and increased complexity, leading to unnecessary data retransmissions and latency issues, especially in next-generation communication systems requiring ultra-reliable and low-latency radio communications.
Innovation Solution
A method for transmitting codewords in wireless communication systems using polar codes, where Hamming weight information is generated and transmitted to facilitate decoding, reducing signaling overhead and improving decoding performance through list decoding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If LTE Turbo codes are used to improve error correction capability, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent changes the parameter representation by transmitting Hamming weight information instead of full codeword information. This parameter transformation reduces the amount of data that needs to be processed during decoding, thereby reducing device complexity while maintaining error correction capability through polar codes
Solution Approach 2:
The patent extracts only the essential Hamming weight information from the complete codeword and transmits this extracted parameter to the receiver. This extraction approach reduces the information processing burden at the receiver side while preserving the necessary error correction functionality
2Reliability
If code complexity is increased to reduce error rate, then reliability is improved, but loss of time increases due to transmission and reception delay
Solution Approach 1:
By extracting and transmitting only Hamming weight information rather than complete codeword data, the patent reduces the volume of data that must be transmitted and processed. This extraction reduces transmission time and reception processing time while maintaining sufficient information for error correction through list decoding
Solution Approach 2:
The patent transforms the problem by changing from transmitting full codewords to transmitting Hamming weight parameters. This parameter change enables faster transmission and quicker decoding operations, reducing overall latency while achieving the required error rate performance
3Reliability
If base station and UE loads are increased to improve decoding performance, then reliability is improved, but use of energy increases
Solution Approach 1:
The patent extracts minimal Hamming weight information for transmission, significantly reducing the data processing burden on both base station and UE. This extraction approach lowers computational loads and energy consumption at both ends while maintaining reliable channel reception through efficient list decoding
Data Source
AI summary
A method for transmitting a codeword in a wireless communication system is disclosed. The method includes generating a codeword by encoding an input signal based on a polar code, acquiring a Hamming weight from a bit sequence of at least a part of the codeword, generating Hamming weight information based on the Hamming weight, and transmitting the Hamming weight information and the codeword to a receiver. The Hamming weight information includes a range indicator indicating a range to which the Hamming weight belongs, among a plurality of ranges.