Next Article in Journal
Beyond Stochastic Gradient Descent for Matrix Completion Based Indoor Localization
Next Article in Special Issue
Heuristic Approaches to Attribute Reduction for Generalized Decision Preservation
Previous Article in Journal
The Pseudolesions of the Oral Mucosa: Differential Diagnosis and Related Systemic Conditions
Previous Article in Special Issue
An Experimental Analytics on Discovering Work Transference Networks from Workflow Enactment Event Logs
Open AccessArticle

Faster-than-Nyquist Signal Processing Based on Unequal Error Probability for High-Throughput Wireless Communications

Department of Radio Communication Engineering, Korea Maritime and Ocean University, 727 Taejong-ro, Yeongdo-gu, Busan 49112, Korea
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(12), 2413; https://doi.org/10.3390/app9122413
Received: 22 April 2019 / Revised: 7 June 2019 / Accepted: 10 June 2019 / Published: 13 June 2019
(This article belongs to the Special Issue Applied Sciences Based on and Related to Computer and Control)
Faster-than-Nyquist (FTN) signal processing, which transmits signals faster than the Nyquist rate, is a representative method for improving throughput efficiency sacrificed performance degradation due to inter-symbol interference. To overcome this problem, this paper proposed FTN signal processing based on the unequal error probability to improve performance. The unequal error probability method divides encoded bits into groups according to priority, and FTN interference rates are differently applied to each group. A lower FTN interference ratio is allocated to the group to which high-priority encoded bits belong and a higher FTN interference ratio is allocated to the group to which low-priority encoded bits belong, thus performance improvement can be obtained compared to the conventional FTN method, with the same interference ratio. In addition, we applied the proposed FTN signal processing, based on the unequal error probability method, to the OFDM (orthogonal frequency division multiplexing) system in multipath channel environments. In the simulations, the performance of the proposed method was better than that of the conventional FTN method by about 0.2 dB to 0.3 dB, with an interference ratio of 20%, 30%, and 40%. In addition, in multipath channels, we confirmed that by applying the proposed unequal error probability, the OFDM-FTN method improves performance to a larger extent than the conventional OFDM-FTN method. View Full-Text
Keywords: FTN; inter-symbol interference; unequal error probability; priority; OFDM; OFDM-FTN FTN; inter-symbol interference; unequal error probability; priority; OFDM; OFDM-FTN
Show Figures

Figure 1

MDPI and ACS Style

Baek, C.-U.; Jung, J.-W. Faster-than-Nyquist Signal Processing Based on Unequal Error Probability for High-Throughput Wireless Communications. Appl. Sci. 2019, 9, 2413.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop