Downlink capacity improvement and interference reduction through Reverse Frequency Allocation

Multi-tier networks comprising of macro-cellular network overlaid with less power, short range, home base stations like femtocells provide an economically feasible method for increasing the cellular capacity. Also the benefit of femtocells is found more in downlink since the traffic in downlink is s...

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Main Authors: Jacob, Ponnu., James, Ashish., Madhukumar, A. S.
Other Authors: School of Computer Engineering
Format: Conference or Workshop Item
Language:English
Published: 2013
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Online Access:https://hdl.handle.net/10356/97428
http://hdl.handle.net/10220/11970
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-974282020-05-28T07:17:33Z Downlink capacity improvement and interference reduction through Reverse Frequency Allocation Jacob, Ponnu. James, Ashish. Madhukumar, A. S. School of Computer Engineering IEEE International Conference on Communication Systems (2012 : Singapore) DRNTU::Engineering::Computer science and engineering Multi-tier networks comprising of macro-cellular network overlaid with less power, short range, home base stations like femtocells provide an economically feasible method for increasing the cellular capacity. Also the benefit of femtocells is found more in downlink since the traffic in downlink is several times more than in uplink. However, the femtocells share the same licensed frequency spectrum as that of the macrocell resulting in cross tier interference which degrades the downlink traffic considerably. This paper investigates a novel method for seamlessly embedding femtocells within a macrocell resource distribution framework to create a two-tier system, which incorporates a cross-tier complementary spectrum sharing known as Reverse Frequency Allocation (RFA) along with Soft Frequency Reuse (SFR) strategy. The proposed scheme guarantees inter-cell orthogonality with reduced interference. It also assures a reasonably high system spectral efficiency, while providing better performance for the users especially in the downlink. Simulation results prove that this scheme can bring about higher system throughput and lower co-channel interference irrespective of the distance of the femtocell from the macrocell base station. 2013-07-22T04:44:18Z 2019-12-06T19:42:41Z 2013-07-22T04:44:18Z 2019-12-06T19:42:41Z 2012 2012 Conference Paper Jacob, P., James, A., & Madhukumar, A. (2012). Downlink capacity improvement and interference reduction through Reverse Frequency Allocation. 2012 IEEE International Conference on Communication Systems (ICCS). https://hdl.handle.net/10356/97428 http://hdl.handle.net/10220/11970 10.1109/ICCS.2012.6406164 en © 2012 IEEE.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
topic DRNTU::Engineering::Computer science and engineering
spellingShingle DRNTU::Engineering::Computer science and engineering
Jacob, Ponnu.
James, Ashish.
Madhukumar, A. S.
Downlink capacity improvement and interference reduction through Reverse Frequency Allocation
description Multi-tier networks comprising of macro-cellular network overlaid with less power, short range, home base stations like femtocells provide an economically feasible method for increasing the cellular capacity. Also the benefit of femtocells is found more in downlink since the traffic in downlink is several times more than in uplink. However, the femtocells share the same licensed frequency spectrum as that of the macrocell resulting in cross tier interference which degrades the downlink traffic considerably. This paper investigates a novel method for seamlessly embedding femtocells within a macrocell resource distribution framework to create a two-tier system, which incorporates a cross-tier complementary spectrum sharing known as Reverse Frequency Allocation (RFA) along with Soft Frequency Reuse (SFR) strategy. The proposed scheme guarantees inter-cell orthogonality with reduced interference. It also assures a reasonably high system spectral efficiency, while providing better performance for the users especially in the downlink. Simulation results prove that this scheme can bring about higher system throughput and lower co-channel interference irrespective of the distance of the femtocell from the macrocell base station.
author2 School of Computer Engineering
author_facet School of Computer Engineering
Jacob, Ponnu.
James, Ashish.
Madhukumar, A. S.
format Conference or Workshop Item
author Jacob, Ponnu.
James, Ashish.
Madhukumar, A. S.
author_sort Jacob, Ponnu.
title Downlink capacity improvement and interference reduction through Reverse Frequency Allocation
title_short Downlink capacity improvement and interference reduction through Reverse Frequency Allocation
title_full Downlink capacity improvement and interference reduction through Reverse Frequency Allocation
title_fullStr Downlink capacity improvement and interference reduction through Reverse Frequency Allocation
title_full_unstemmed Downlink capacity improvement and interference reduction through Reverse Frequency Allocation
title_sort downlink capacity improvement and interference reduction through reverse frequency allocation
publishDate 2013
url https://hdl.handle.net/10356/97428
http://hdl.handle.net/10220/11970
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