Next Article in Journal
Bidirectional, Bimodal Ultrasonic Lamb Wave Sensing in a Composite Plate Using a Polarization-Maintaining Fiber Bragg Grating
Previous Article in Journal
Application of Fresnel Zone Plate Focused Beam to Optimized Sensor Design for Pulse-Echo Harmonic Generation Measurements
Previous Article in Special Issue
A Multi-Feature and Multi-Level Matching Algorithm Using Aerial Image and AIS for Vessel Identification
Article Menu
Issue 6 (March-2) cover image

Export Article

Open AccessArticle
Sensors 2019, 19(6), 1374; https://doi.org/10.3390/s19061374

Relay Positions Considering Interference from Other Sub-Channels in OFDMA-Based D2D Group-Casting Systems

Department of Information and Communication Engineering, Dongguk University, Seoul 04602, Korea, [email protected]
*
Author to whom correspondence should be addressed.
This paper is an extended version of our paper published in Proceedings of the Tenth International Conference on Ubiquitous and Future Networks (ICUFN), Prague, Czech Republic, 3–6 July 2018, “Relay Position Considering Interference from Other Sub-Channels in D2D Group-casting Systems”.
Received: 23 February 2019 / Revised: 10 March 2019 / Accepted: 15 March 2019 / Published: 19 March 2019
(This article belongs to the Special Issue Future Research Trends in Internet of Things and Sensor Networks)
  |  
PDF [3078 KB, uploaded 19 March 2019]
  |  

Abstract

Device-to-device (D2D) communication is a technique for direct communication between devices without going through a base station or other infrastructure. D2D communication technology has the advantages of improving spectrum efficiency and reducing transmission delay and transmission power. In D2D communication systems, orthogonal frequency-division multiple access (OFDMA) is widely used to maintain similarities with cellular communication systems and to secure transmission distance. OFDMA allows flexible and efficient use of frequency resources by allocating sub-channels independent to each user. In this paper, we consider a D2D overlay system that uses different sub-channels for cellular and D2D communications. In theory, the signals on different sub-channels of an OFDMA system are orthogonal and not interfered with each other. However, in a D2D communication system, which operates in a distributed manner, there is non-negligible interference from other sub-channels because of in-band emissions. In this paper, we address the performance degradation resulting from the interference from other sub-channels for OFDMA-based D2D group-casting systems. We consider three different scenarios of D2D relay, and we find the relay position that minimizes the outage probability. The simulation and analytical results show that the optimal location of a relay can be considerably different according to the source location and the target scenario. View Full-Text
Keywords: D2D; Group-casting; OFDMA; Relay; In-band emission; Interference D2D; Group-casting; OFDMA; Relay; In-band emission; Interference
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

Rim, M.; Go, E. Relay Positions Considering Interference from Other Sub-Channels in OFDMA-Based D2D Group-Casting Systems. Sensors 2019, 19, 1374.

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]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top