移动通信2025，Vol.49Issue(9)：15-23,9.DOI:10.3969/j.issn.1006-1010.20250708-0001
一种突破频谱效率下限的部分整形BC-PAS方法
Partial Shaping BC-PAS Method for Breaking the Spectral Efficiency Lower Bound
赵喆 1梁楚龙 1赵巍1
作者信息
- 1. 中兴通讯股份有限公司,广东 深圳 518057||移动网络和移动多媒体技术国家重点实验室,广东 深圳 518057
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摘要
Abstract
Probabilistic amplitude shaping(PAS)is a key technique for approaching the Shannon capacity.The existing block-code-based PAS(BC-PAS)scheme replaces the conventional distribution matcher with a block code decoder,thereby maintaining comparable performance while significantly reducing receiver complexity.However,in a 2m-ary pulse amplitude modulation(PAM)system,BC-PAS is inherently constrained by the spectral efficiency η,which must satisfy η≥m-1.To overcome this limitation,a partial-shaping BC-PAS method is proposed.By selectively shaping only a subset of the m-1 amplitude bits within the 2m-ary PAM signal,the scheme enables spectral efficiency expansion under η<m-1.This approach provides a more flexible and efficient rate adaptation solution for future sixth-generation mobile communication systems.关键词
部分整形/分组码/概率幅度整形/频谱效率Key words
partial shaping/block codes/probabilistic amplitude shaping(PAS)/spectral efficiency分类
信息技术与安全科学引用本文复制引用
赵喆,梁楚龙,赵巍..一种突破频谱效率下限的部分整形BC-PAS方法[J].移动通信,2025,49(9):15-23,9.
