124 0

Characterization of Interference in OFDMA Small-Cell Networks

Title
Characterization of Interference in OFDMA Small-Cell Networks
Author
윤종원
Keywords
Femtocell; Interference; OFDMA; WiMAX; FEMTOCELL NETWORKS; HETEROGENEOUS NETWORKS; MANAGEMENT; AVOIDANCE
Issue Date
2018-05
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, v. 67, No. 9, Page. 7937-7954
Abstract
The increase in mobile Internet access is pushing mobile network operators toward deploying smaller cells (femtocells) and sophisticated air interface technologies, Orthogonal Frequency Division Multiple Access (OFDMA). The expected high density of deployment and uncoordinated operations of femtocells, however, make interference management both critical and extremely challenging. A significant challenge stems from the fact that femtocells have to use the same synchronous access technology as traditional macrocells. Given this, understanding the impact of the multitude of design choices (originally tailored to well-planned macrocellular networks) on interference management forms an essential first step toward designing efficient solutions for next-generation femtocell networks. This in turn is the focus of our paper. With the help of extensive measurements from our femtocell testbed, we characterize the impact of various system design choices on interference in OFDMA femtocell deployments. The design choices that we examine are categorized across three broad dimensions: 1) resource isolation at the logical (MAC) level across femtocells, 2) resource mapping through sub-channelization at the physical (PHY) level within each femtocell, and 3) synchronization (or lack thereof) between interfering cells. Based on the insights from our measurement study, we discuss several implications on the choice of system design features for multicell operations. We also provide guidelines for the design of efficient interference management solutions for femtocell networks.
URI
https://ieeexplore.ieee.org/abstract/document/8362677http://repository.hanyang.ac.kr/handle/20.500.11754/81193
ISSN
0018-9545; 1939-9359
DOI
10.1109/TVT.2018.2839692
Appears in Collections:
COLLEGE OF COMPUTING[E] > COMPUTER SCIENCE(소프트웨어학부) > Articles
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE