Polar-Coded Information Block Transmission With Convolution Precoding
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Solution Overview
Problem
The increasing number of user equipment (UEs) and limited radio resources in wireless communication systems necessitate efficient methods for transmitting and receiving data and control information, particularly in high-density node and UE environments, while supporting various services with different requirements and overcoming latency challenges.
Innovation Solution
A method and device for transmitting and receiving information blocks using polar encoding and convolution precoding, where bit sequences are ordered by reliability, with predetermined bit values mapped to specific indices to optimize resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the number of user equipment (UEs) increases in a wireless communication system, then the communication capacity and data throughput demand increase, but the available radio resources remain limited
Solution Approach 1:
The patent applies parameter changes by modifying the polar sequence ordering from conventional approaches to ascending order of reliability. This reparameterization of the bit sequence arrangement optimizes the code rate and improves channel coding efficiency, allowing more effective utilization of limited radio resources to support increased UE density and communication capacity demands.
2Reliability
If polar encoding is used for channel coding, then the coding performance improves, but the code rate and throughput may be limited
Solution Approach 1:
The patent resolves this contradiction by changing the parameter of polar sequence ordering to ascending order of reliability. This parameter modification optimizes the distribution of information bits across channels of varying reliability, improving both the code rate efficiency and throughput while maintaining the reliability benefits of polar encoding. The approach enables polar codes to achieve better spectral efficiency and support higher data rates.
3Reliability
If convolution precoding is applied to polar codes, then the minimum distance between codewords increases, but the processing complexity increases
Solution Approach 1:
The patent applies preliminary action by performing convolution precoding on the polar code structure before transmission. This preliminary processing step pre-enhances the code properties by increasing the minimum distance between codewords, which improves error correction capability and reliability. The convolution precoding is applied systematically to the bit sequence, providing robust error protection while managing processing complexity through efficient implementation.
Data Source
AI summary
This communication device may apply convolution precoding to a bit sequence, polar-encode the convolution-precoded bit sequence, and transmit same. When the size of a polar coder for convolution precoding is 2N, pre-determined values are mapped to last m bit indexes from among first N bit indexes in a bit sequence having the length of 2N, which is an input for the convolution precoding, and bit values of an information block are mapped to K bit indexes from among remaining (2N-m) bit indexes.