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Author Nasri, R. ♦ Affes, S. ♦ Stephene, A.
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2015
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Macrocell networks ♦ Integrated circuits ♦ Transmitters ♦ Interference ♦ Receivers ♦ Throughput ♦ Femtocells
Abstract In a spectrum-sharing heterogeneous network (Het- Net), low-power small cells such as femtocells are deployed jointly with macrocells. This new cell layer generates interference that degrades network performance. To mitigate this critical issue in HetNets, we combine both interference cancellation and interference avoidance to benefit from their respective advantages on the downlink of LTE (Long Term Evolution). On one hand, a new downlink interference cancellation (DL-IC) strategy reduces the interference impact on users by optimizing their received signal to interference plus noise ratio (SINR). On the other hand, a new low-power almost-blank subframes (LP- ABS) policy minimizes the effect of downlink interference on femtocells and neighboring macrocells by reducing the transmit power of macrocells during special subframes. When implementing DL-IC and LP-ABS separately, system-level simulations do suggest that both global network performance and user experience in terms of total throughput and received SNR or link-level throughput, respectively, are significantly enhanced, indeed. However, much more significant gains both in performance and complexity can be achieved by combining newly proposed DL-IC and LP-ABS interference mitigation strategies.
Description Author affiliation: EMT Centre, INRS, Montreal, QC, Canada (Nasri, R.; Affes, S.; Stephene, A.)
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2015-10-04
Publisher Place Canada
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
e-ISBN 9781467365550
Size (in Bytes) 179.56 kB
Page Count 6
Starting Page 1
Ending Page 6


Source: IEEE Xplore Digital Library