Interference cancellation and signal detection technique based on QRD-M algorithm for FTN signalling

• Published in: Electronics letters Vol. 53; no. 6; pp. 409 - 411
• Main Authors: Baek, M.-S, Yun, J, Hur, N, Lim, H
• Format: Journal Article
• Language: English
• Published: The Institution of Engineering and Technology 16.03.2017
• Subjects: Algorithms; Bahl‐Cocke‐Jelinek‐Raviv algorithm; BCJR algorithm; BER performance; Cancellation; Complexity; computational complexity; Electronics; error statistics; faster‐than‐Nyquist signalling; FTN signalling; Information and communications; Interference; interference cancellation; interference suppression; intersymbol interference; inter‐symbol interference coefficient matrix; matrix algebra; QR decomposition; QRD‐M algorithm; Signal detection; signal detection technique; Signalling; Symbols; telecommunication signalling; Toeplitz structure; transmitted symbol detection; Bahl-Cocke-Jelinek-Raviv algorithm; faster-than-Nyquist signalling; interference suppression; signal detection; intersymbol interference; FTN signalling; QR decomposition; telecommunication signalling; signal detection technique; BCJR algorithm; matrix algebra; transmitted symbol detection; QRD-M algorithm; BER performance; Toeplitz structure; inter-symbol interference coefficient matrix; interference cancellation; computational complexity; error statistics
• ISSN: 0013-5194; 1350-911X; 1350-911X
• DOI: 10.1049/el.2016.3377

This Letter presents interference cancellation and signal detection technique for faster-than-Nyquist (FTN) signalling. The proposed scheme uses QR decomposition (QRD)-M algorithm to execute interference cancellation and signal detection. Based on the Toeplitz structure of the inter-symbol interference coefficient matrix, the QRD-M algorithm is adopted to detect the transmitted symbols from an FTN signal. The computational complexity comparisons and numerical results demonstrate that the proposed technique can achieve the complexity <10% of Bahl–Cocke–Jelinek–Raviv (BCJR) algorithm while maintaining BER performance similar to that of BCJR algorithm.