Time-domain vs. frequency-domain equalization for FTN signaling

Faster-than-Nyquist (FTN) signaling has been rec- ognized as a promising technique for next-generation high data rate communications. By intentionally reducing the symbol interval, FTN signaling is capable of transmitting more symbols than classic Nyquist signaling within the same time period and bandwidth. However, the intentional non-orthogonality of the bandlimited signaling pulses imposes severe inter-symbol interference (ISI), which requires powerful equalization at the receiver. Hence, we embark on the comparison of time- and frequency-domain equalization for FTN signaling both by the- oretical analysis and numerical simulations. It is shown that frequency-domain equalization fails to reliably detect the FTN signal with a low FTN packing factor, while the time-domain equalization still performs well.

FTN signaling, frequency-domain equalization, time-domain equalization

10.1109/TVT.2020.3000074

0018-9545

9174-9179

Li, Shuangyang

72067f67-db02-4820-9e65-091d8ff39b65

Yuan, Weijie

f1d6dc8e-6e97-4c5b-bfc7-78f48efb93b7

Yuan, Jinhong

707c1922-81c1-4d40-b532-0f30282bb0e4

Bai, Booming

7331bf8f-9f3d-439b-9b1d-0040cebb2b1a

Ng, Derrick Wing Kwan

8e2a32d3-cb0d-4c38-b05c-03ef16a5c707

Hanzo, Lajos

66e7266f-3066-4fc0-8391-e000acce71a1

August 2020

Li, Shuangyang

72067f67-db02-4820-9e65-091d8ff39b65

Yuan, Weijie

f1d6dc8e-6e97-4c5b-bfc7-78f48efb93b7

Yuan, Jinhong

707c1922-81c1-4d40-b532-0f30282bb0e4

Bai, Booming

7331bf8f-9f3d-439b-9b1d-0040cebb2b1a

Ng, Derrick Wing Kwan

8e2a32d3-cb0d-4c38-b05c-03ef16a5c707

Hanzo, Lajos

66e7266f-3066-4fc0-8391-e000acce71a1

Li, Shuangyang, Yuan, Weijie, Yuan, Jinhong, Bai, Booming, Ng, Derrick Wing Kwan and Hanzo, Lajos (2020) Time-domain vs. frequency-domain equalization for FTN signaling. IEEE Transactions on Vehicular Technology, 69 (8), 9174-9179, [9108634]. (doi:10.1109/TVT.2020.3000074).

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Time-Domain vs. Frequency-Domain Equalization for FTN Signaling - Accepted Manuscript

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Accepted/In Press date: 2 June 2020

e-pub ahead of print date: 4 June 2020

Published date: August 2020

Additional Information: Funding Information: Manuscript received December 5, 2019; revised April 8, 2020; accepted June 1, 2020. Date of publication June 4, 2020; date of current version August 13, 2020. This work was supported in part by the Australian Research Council Discovery Projects under Grant DP190101363, in part by the Linkage Project under Grant LP170101196, in part by the National Natural Science Foundation of China under Grants 61771364, and in part by the Research and Development Project of Guangdong Province under Grant 2018B010114001. The work of Derrick Wing Kwan Ng was supported in part by the funding from the UNSW Digital Grid Futures Institute, UNSW, Sydney, under a cross-disciplinary fund scheme and in part by the Australian Research Council’s Discovery Project (DP190101363). The work of Lajos Hanzo was supported of the Engineering and Physical Sciences Research Council projects EP/N004558/1, EP/P034284/1, EP/P034284/1, EP/P003990/1 (COALESCE), of the Royal Society’s Global Challenges Research Fund Grant as well as of the European Research Council’s Advanced Fellow Grant QuantCom. The review of this article was coordinated by Prof. H. H. Nguyen. (Corresponding author: Weijie Yuan.) Shuangyang Li is with the State Key Lab. of ISN, Xidian University, Xi’an 710071, China, and also with the School of Electrical Engineering and Telecommunications, University of New South Wales, Sydney, NSW 2052, Australia (e-mail: shuangyang.li@unsw.edu.au). Publisher Copyright: © 1967-2012 IEEE.

Keywords: FTN signaling, frequency-domain equalization, time-domain equalization

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