Next Article in Journal
Measuring Identification and Quantification Errors in Spectral CT Material Decomposition
Previous Article in Journal
NMR-MPar: A Fault-Tolerance Approach for Multi-Core and Many-Core Processors
Article Menu
Issue 3 (March) cover image

Export Article

Open AccessArticle
Appl. Sci. 2018, 8(3), 466; https://doi.org/10.3390/app8030466

An Interference Cancellation Scheme for High Reliability Based on MIMO Systems

uT Communication Research Institute, Sejong University, Gunja-dong 98, Gwangjin-gu, Seoul 05006, Korea
*
Author to whom correspondence should be addressed.
Received: 9 February 2018 / Revised: 5 March 2018 / Accepted: 16 March 2018 / Published: 18 March 2018
(This article belongs to the Section Computer Science and Electrical Engineering)
View Full-Text   |   Download PDF [1109 KB, uploaded 3 May 2018]   |  

Abstract

This article proposes a new interference cancellation scheme in a half-duplex based two-path relay system. In the conventional two-path relay system, inter-relay-interference (IRI) which severely degrades the error performances at a destination occurs because a source and a relay transmit signals simultaneously at a specific time. The proposed scheme removes the IRI at a relay for higher signal-to-interference plus noise ratio (SINR) to receive interference free signal at a destination, unlike the conventional relay system, which removes IRI at a destination. To handle the IRI, the proposed scheme uses multiple-input multiple-output (MIMO) signal detection at the relays and it makes low-complexity signal processing at a destination which is a usually mobile user. At the relays, the proposed scheme uses the low-complexity QR decomposition-M algorithm (QRD-M) to optimally remove the IRI. Also, for obtaining diversity gain, the proposed scheme uses cyclic delay diversity (CDD) to transmit the signals at a source and the relays. In simulation results, the error performance for the proposed scheme is better when the distance between one relay and another relay is low unlike the conventional scheme because the QRD-M detects received signal in order of higher post signal-to-noise ratio (SNR). View Full-Text
Keywords: IRI; relay; CDD; QRD-M IRI; relay; CDD; QRD-M
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Ro, J.-H.; Park, S.-S.; Song, H.-K. An Interference Cancellation Scheme for High Reliability Based on MIMO Systems. Appl. Sci. 2018, 8, 466.

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.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Appl. Sci. EISSN 2076-3417 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top