Interference mitigation in femtocell networks using single-radio parasitic antennas

Rongrong Qian; Mathini Sellathurai

doi:10.1109/ICC.2015.7248755

Interference mitigation in femtocell networks using single-radio parasitic antennas

Rongrong Qian, Mathini Sellathurai

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

4 Citations (Scopus)

Abstract

The femtocell networks provide a promising solution to increase system capacity and improve indoor coverage. However, inter-cell interference becomes enormous in femtocells due to dense deployment and cell-size reduction. This paper proposes the interference mitigation method for the downlink of femtocells, using the electronically steerable parasitic array radiator (ESPAR) antenna at both femto-base stations (FBSs) and user terminals (UTs), which relies on a single radio-frequency (RF) chain; thus meets the demanding low-power, low-cost and small-size requirements of modern wireless terminals - FBSs and UTs. We first exploit the ESPAR antenna as a switched-beam array capable of predefining directional beampatterns accessing to different angular sectors. Then each FBS/UT dynamically selects an appropriate beampattern according to its measurement of desired direction. We also consider an optimal way to employ the ESPAR antenna by adaptively designing the beampattern steering to desired direction while placing nulls to interferers. The results show significant gains obtained by using ESPAR antennas at both FBSs and UTs.

Original language	English
Title of host publication	IEEE International Conference on Communications (ICC), 2015
Publisher	IEEE
Pages	2828-2833
Number of pages	6
ISBN (Print)	9781467364324
DOIs	https://doi.org/10.1109/ICC.2015.7248755
Publication status	Published - 2015
Event	2015 IEEE International Conference on Communications - London, London, United Kingdom Duration: 8 Jun 2015 → 12 Jun 2015

Conference

Conference	2015 IEEE International Conference on Communications
Abbreviated title	ICC 2015
Country/Territory	United Kingdom
City	London
Period	8/06/15 → 12/06/15

Keywords

adaptive beamforming
beam switching
ESPAR
Femtocell

ASJC Scopus subject areas

Electrical and Electronic Engineering
Computer Networks and Communications

Access to Document

10.1109/ICC.2015.7248755

Cite this

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title = "Interference mitigation in femtocell networks using single-radio parasitic antennas",

abstract = "The femtocell networks provide a promising solution to increase system capacity and improve indoor coverage. However, inter-cell interference becomes enormous in femtocells due to dense deployment and cell-size reduction. This paper proposes the interference mitigation method for the downlink of femtocells, using the electronically steerable parasitic array radiator (ESPAR) antenna at both femto-base stations (FBSs) and user terminals (UTs), which relies on a single radio-frequency (RF) chain; thus meets the demanding low-power, low-cost and small-size requirements of modern wireless terminals - FBSs and UTs. We first exploit the ESPAR antenna as a switched-beam array capable of predefining directional beampatterns accessing to different angular sectors. Then each FBS/UT dynamically selects an appropriate beampattern according to its measurement of desired direction. We also consider an optimal way to employ the ESPAR antenna by adaptively designing the beampattern steering to desired direction while placing nulls to interferers. The results show significant gains obtained by using ESPAR antennas at both FBSs and UTs.",

keywords = "adaptive beamforming, beam switching, ESPAR, Femtocell",

author = "Rongrong Qian and Mathini Sellathurai",

year = "2015",

doi = "10.1109/ICC.2015.7248755",

language = "English",

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pages = "2828--2833",

booktitle = "IEEE International Conference on Communications (ICC), 2015",

publisher = "IEEE",

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note = "2015 IEEE International Conference on Communications, ICC 2015 ; Conference date: 08-06-2015 Through 12-06-2015",

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AU - Qian, Rongrong

AU - Sellathurai, Mathini

PY - 2015

Y1 - 2015

N2 - The femtocell networks provide a promising solution to increase system capacity and improve indoor coverage. However, inter-cell interference becomes enormous in femtocells due to dense deployment and cell-size reduction. This paper proposes the interference mitigation method for the downlink of femtocells, using the electronically steerable parasitic array radiator (ESPAR) antenna at both femto-base stations (FBSs) and user terminals (UTs), which relies on a single radio-frequency (RF) chain; thus meets the demanding low-power, low-cost and small-size requirements of modern wireless terminals - FBSs and UTs. We first exploit the ESPAR antenna as a switched-beam array capable of predefining directional beampatterns accessing to different angular sectors. Then each FBS/UT dynamically selects an appropriate beampattern according to its measurement of desired direction. We also consider an optimal way to employ the ESPAR antenna by adaptively designing the beampattern steering to desired direction while placing nulls to interferers. The results show significant gains obtained by using ESPAR antennas at both FBSs and UTs.

AB - The femtocell networks provide a promising solution to increase system capacity and improve indoor coverage. However, inter-cell interference becomes enormous in femtocells due to dense deployment and cell-size reduction. This paper proposes the interference mitigation method for the downlink of femtocells, using the electronically steerable parasitic array radiator (ESPAR) antenna at both femto-base stations (FBSs) and user terminals (UTs), which relies on a single radio-frequency (RF) chain; thus meets the demanding low-power, low-cost and small-size requirements of modern wireless terminals - FBSs and UTs. We first exploit the ESPAR antenna as a switched-beam array capable of predefining directional beampatterns accessing to different angular sectors. Then each FBS/UT dynamically selects an appropriate beampattern according to its measurement of desired direction. We also consider an optimal way to employ the ESPAR antenna by adaptively designing the beampattern steering to desired direction while placing nulls to interferers. The results show significant gains obtained by using ESPAR antennas at both FBSs and UTs.

KW - adaptive beamforming

KW - beam switching

KW - ESPAR

KW - Femtocell

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U2 - 10.1109/ICC.2015.7248755

DO - 10.1109/ICC.2015.7248755

M3 - Conference contribution

AN - SCOPUS:84953748731

SN - 9781467364324

SP - 2828

EP - 2833

BT - IEEE International Conference on Communications (ICC), 2015

PB - IEEE

T2 - 2015 IEEE International Conference on Communications

Y2 - 8 June 2015 through 12 June 2015

ER -

Interference mitigation in femtocell networks using single-radio parasitic antennas

Abstract

Conference

Keywords

ASJC Scopus subject areas

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