Bit-Interleaved Modulation With Selective Multi-Level Decoding
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently combining multi-level coding (MLC) and bit-interleaved coded modulation (BICM) due to lack of configuration information exchange between user equipment (UE) and network nodes, leading to suboptimal decoding performance and increased complexity.
Innovation Solution
A method where UE transmits capability information indicating its MLC decoding configuration, and network nodes provide configuration information for BICM and MLC decoding based on this, allowing dynamic switching between BICM with gray labeling and MLC with set partitioning labeling to improve decoding performance while reducing complexity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MLC decoding is applied to all constellation bits, then decoding performance is improved, but device complexity increases
Solution Approach 1:
The patent segments the constellation bits into multiple groups based on their polarization characteristics and applies different decoding schemes to each group. Specifically, bits are divided into those suitable for MLC decoding and those suitable for BICM decoding, allowing the system to optimize performance for each subset while managing overall complexity.
Solution Approach 2:
The patent applies different decoding qualities to different bit positions based on their individual characteristics. Bits with favorable polarization characteristics receive MLC decoding for enhanced performance, while other bits use BICM decoding, creating a localized optimization strategy that improves overall system performance without uniformly increasing complexity across all bits.
2Reliability
If configuration information exchange is implemented between UE and network nodes, then decoding performance is improved, but signaling overhead increases
Solution Approach 1:
The patent implements preliminary capability indication where the UE declares its MLC decoding capability in advance through capability information. This allows the network node to pre-configure appropriate decoding parameters and bit groupings without requiring extensive real-time signaling, reducing overhead while maintaining performance benefits.
3Reliability
If dynamic switching between BICM and MLC decoding is implemented, then decoding performance is improved, but processing complexity increases
Solution Approach 1:
The patent segments the decoding process into fixed groups assigned at configuration stage, where specific bit groups are permanently assigned to MLC decoding while others use BICM. This segmentation eliminates the need for dynamic switching logic during operation, reducing processing complexity while maintaining the performance advantages of selective decoding schemes.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit capability information indicating that the UE is configured to perform multi-level coding (MLC) decoding for one or more bits of a plurality of constellation bits. The UE may receive, in accordance with the capability information, configuration information that indicates to perform bit-interleaved coded modulation (BICM) decoding for a first set of bits of the plurality of constellation bits and that indicates to perform MLC decoding for a second set of bits of the plurality of constellation bits, the second set of bits being based at least in part on the capability information. Numerous other aspects are described.