Nonbinary Polar Modulation Mapping for Lower Wireless Error Rates
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently encoding and modulating sets of information symbols that include multiple bits, particularly in nonbinary polar coding scenarios, leading to suboptimal reliability and error rates.
Innovation Solution
Implementing nonbinary polar encoding and modulation schemes that map encoded symbols to constellation points, allowing for bit-to-constellation mapping and demapping processes to enhance reliability and reduce error rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If nonbinary polar encoding is used to encode multiple information bits per symbol, then the data transmission efficiency is improved, but the reliability and error rates deteriorate
Solution Approach 1:
The patent segments the encoding and modulation process into distinct stages: nonbinary polar encoding of information symbols into encoded symbols, followed by mapping of these encoded symbols to constellation points. This segmentation allows optimized handling of each stage separately, maintaining efficiency while improving reliability through careful mapping design.
Solution Approach 2:
The patent changes the parameter representation by mapping encoded symbols (which have different reliability characteristics) to specific constellation points based on their reliability levels. This parameter transformation allows the system to adapt the modulation scheme to the encoded symbol characteristics, thereby improving overall reliability while maintaining high data transmission efficiency.
2Device complexity
If encoded symbols are mapped to constellation points using traditional modulation schemes, then the implementation complexity is reduced, but the performance optimization for nonbinary polar coding is lost
Solution Approach 1:
The patent introduces an intermediary mapping stage between nonbinary polar encoding and traditional modulation. The encoded symbols serve as an intermediary representation that captures the reliability information, which is then mapped to constellation points. This intermediary step preserves the benefits of traditional modulation while incorporating optimization for nonbinary polar coding.
Solution Approach 2:
The patent creates a universal mapping framework that works with both traditional and nonbinary polar coding schemes. The mapping procedure can handle different encoded symbol types and reliability characteristics, making the system versatile while maintaining optimized performance for nonbinary polar coding specifically.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. The described techniques relate to improved methods, systems, devices, and apparatuses that support modulation schemes for nonbinary polar coding. For example, the described techniques may enable a transmitting device to perform a modulation of a set of symbols (e.g., bit pairs) that are encoded using a nonbinary polar encoding scheme. For example, the transmitting device may map each symbol of a set of encoded symbols to a constellation point. Additionally, or alternatively, the transmitting device may convert the encoded symbols into strings of bits. The transmitting device may accordingly perform bit-to-constellation mapping of the resulting bitstring using an existing mapping scheme or by defining a new mapping scheme. A receiving device may demodulate a received message by performing a demodulation of the set of modulated symbols or bits (e.g., and by converting the bitstring into the set of information symbols).