LDPC Codeword Length Switching for Wireless Throughput Balance
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently transmitting data between devices in shared environments, particularly due to limitations in wireless protocols that do not support suitable data communication capabilities.
Innovation Solution
The implementation of low-density parity-check (LDPC) coding in wireless communication devices, where the devices determine the count of information bits and select appropriate codeword lengths based on thresholds, to generate codewords that balance coding rate and error reduction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a fixed codeword length is used for all data sizes, then the encoding process is simple, but the coding rate cannot be optimized for different data sizes resulting in reduced transmission efficiency
Solution Approach 1:
The patent implements dynamic codeword length selection based on the size of the data payload. The system adjusts the codeword length (e.g., 648, 1944, or other lengths) according to the number of information bits to be transmitted, allowing the coding rate to be optimized for different data sizes while maintaining transmission efficiency
Solution Approach 2:
The system changes the codeword length parameter based on the data size. By selecting different codeword lengths (such as 648 bits for smaller payloads, 1944 bits for larger payloads), the coding rate is adjusted to optimize transmission efficiency for different data volumes without requiring complex adaptive algorithms
2Reliability
If more parity bits are added to increase error reduction capability, then the reliability of data transmission improves, but the coding rate decreases resulting in lower data throughput
Solution Approach 1:
The system dynamically adjusts the number of parity bits based on the data size and channel conditions. By changing the codeword length and corresponding parity bit count, the system optimizes the balance between error reduction capability and data throughput, ensuring high reliability without unnecessarily reducing transmission efficiency
Data Source
AI summary
Systems and methods for performing low-density parity-check (LDPC) coding may include a wireless communication device that determines a count of a plurality of information bits. The wireless communication device may select a codeword length according to the count. A LDPC encoder of the wireless communication device may generate a codeword for the plurality of information bits, the codeword having the codeword length. The wireless communication device may transmit the codeword to an LDPC decoder of another wireless communication device.