mmWave LDPC Coding with 1248-Bit 7/8 Codewords
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Solution Overview
Problem
Current wireless communication systems in the millimeter-wave band face challenges in achieving high data transmission rates and efficient communication due to limitations in existing LDPC code implementations, particularly in supporting advanced encoding rates like 7/8 and higher data rates required for next-generation networks.
Innovation Solution
The implementation of an LDPC code with an extended codeword length of 1248 bits and an encoding rate of 7/8, achieved through a puncturing procedure applied to an initial LDPC code, which allows for better performance with QPSK, 16QAM, 64QAM, and 256QAM modulations, and channel bonding techniques, supporting data rates up to 30 Gbps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If legacy LDPC codes are used in millimeter-wave wireless communication systems, then hardware complexity remains low, but data transmission rates are limited and cannot achieve high-speed data access
Solution Approach 1:
The patent applies parameter changes by extending the codeword length from traditional values to 1248 bits and setting the encoding rate to 7/8. This specific parameter configuration enables the LDPC code to achieve high data transmission rates (up to 30 Gbps) in millimeter-wave bands while maintaining compatibility with existing hardware architectures, thus improving productivity without significantly increasing device complexity
Solution Approach 2:
The patent segments the 1248-bit codeword into structured components including information bits and parity bits with specific arrangements. This segmentation allows for efficient encoding and decoding operations, enabling high-speed transmission by processing data in manageable segments rather than requiring complex monolithic processing
2Productivity
If extended LDPC code with codeword length of 1248 bits and encoding rate of 7/8 is implemented, then data transmission rates increase to support next-generation networks, but code complexity increases
Solution Approach 1:
The patent employs preliminary action through the puncturing procedure, where parity bits are pre-calculated and then selectively removed according to a predetermined pattern. This allows the encoder to work with the full 1248-bit codeword structure for optimal performance while the puncturing pattern simplifies the actual transmission requirements, managing code complexity beforehand
Solution Approach 2:
The patent implements dynamics by making the code structure adaptable through configurable parameters. The LDPC code can be dynamically adjusted to support different modulation schemes (QPSK, 16QAM, 64QAM, 256QAM) and channel bonding configurations, allowing the system to optimize between code complexity and transmission rate based on channel conditions
3Productivity
If advanced encoding rates like 7/8 are supported, then communication efficiency improves, but compatibility with existing LDPC code implementations decreases
Solution Approach 1:
The patent achieves universality by designing an LDPC code structure that can serve multiple functions and configurations. The same 1248-bit codeword structure with 7/8 encoding rate can be applied across different modulation schemes (QPSK, 16QAM, 64QAM, 256QAM) and channel bonding scenarios, making it compatible with various existing implementations while maintaining improved communication efficiency
Data Source
AI summary
Some demonstrative embodiments include apparatus, system and method of communicating a transmission encoded according to a Low-Density Parity-Check (LDPC) code. For example, an apparatus may include logic and circuitry configured to cause a wireless station to encode a plurality of data bits into a plurality of codewords according to an LDPC code having an encoding rate of 7/8 and a codeword length of 1248 bits; and to transmit a transmission over a millimeter Wave (mmWave) frequency band based on the plurality of codewords.