The Evolution of Faster-Than-Nyquist Signaling

IEEE Access

Lajos Hanzo¹  Takumi Ishihara²  Shinya Sugiura² 

[1] Department of Electronics and Computer Science, University of Southampton, Southampton, U.K.;Institute of Industrial Science, The University of Tokyo, Tokyo, Japan;

关键词: Capacity;    detection;    faster-than-Nyquist signaling;    interference;    precoding;   

DOI  :  10.1109/ACCESS.2021.3088997

来源: DOAJ

【 摘 要 】

The fifty-year progress of faster-than-Nyquist (FTN) signaling is surveyed. FTN signaling exploits non-orthogonal dense symbol packing in the time domain for the sake of increasing the data rate attained. After reviewing the system models of both the conventional Nyquist-based and FTN signaling transceivers, we survey the evolution of FTN techniques, including their low-complexity detection and channel estimation. Furthermore, in addition to the classic FTN signaling philosophy, we introduce the recent frequency-domain filtering and precoding aided schemes. When relying on precoding, the information rate of FTN signaling becomes related to the eigenvalues of an FTN-specific intersymbol interference matrix, which provides a unified framework for the associated information-theoretic analysis and simplifies the associated power allocation specifically designed for increasing the information rate attained. We show that the FTN signaling scheme combined with bespoke power allocation employing a realistic raised-cosine shaping filter achieves the Shannon capacity associated with ideal rectangular shaping filters.

【 授权许可】

Unknown