OFDM Multiple Antennas Cognitive Radio Relay CDMA Synchronization Channel Estimation Spectrum Sharing Interference Cancellation Full duplex Spectrum Sensing Resource Allocation Neural Networks Stochastic Geometry Equalizer Bi-Directional Feedback Femtocell Energy Harvesting Heterogeneous Networks Device-to-Device (D2D) Cross-link interference Cell Search SINR mismatch problem Ultra-dense small cell networks HetNet Idle cells Spectral efficiency Dynamic TDD interference management NOMA FBMC selection diversity Handoff outage probability mode selection B5G multi-spectral achievable sum rate Grant-free Transmission Filtered OFDM tabu-search bursty traffic model flexible duplex 5G Asynchronous Transmission Preamble Deep learning Shortened TTI automatic repeat request (ARQ) Two-way communications transmission capacity (TC) in-band full-duplex system self-interference cancellation Complexity Ultra-dense small cell sensing duration Correlated MIMO Cognitive relay networks Heterogeneous channel estimation capability Bi-directional full-duplex full-duplex cellular full-duplex relay Simultaneous Sensing and Transmission UWB OQAM Windowing Vehicle-to-vehicle communication prototype filter pilot signal LTE-based V2V link reliability resource size control interference to noise ratio eigen decomposition TS-W-OFDM C-V2V massive connectivity Reliability Vehicle-to-Vehicle full-spreading NOMA Resource management Cooperative systems Coexistence scenarios mixed numerology 6G Cell-free Coexisting network Multiple access Railway CP-OFDM MLP Edge computing Full-duplex Mobility non-orthogonal multiple access HST interference mitigation Computation offloading TDD configuration Singular Vale Decomposition
Status : Published 
Date : 2010-11 
Title : Beam Subset Selection Strategy for Interference Reduction in Two-tier Femtocell Networks 
Authors : Sungsoo Park, Woohyun Seo, Youngju Kim, Sungmook Lim and Daesik Hong 
Journal : IEEE Transactions on Wireless Communications 
Abstract : This paper examines an orthogonal random beamforming-based cross-tier interference reduction scheme for two-tier femtocell networks. In order to improve the immunity of both macrocell and femtocell users to cross-tier interference, we adopt a macrocell beam subset selection strategy. This beam subset selection strategy maximizes the throughput of the macrocell by optimizing the trade-off between the multiplexing gain and the multiuser interference. Simultaneously, the max-throughput scheduler suppresses the cross-tier interference with an adaptively reduced number of beams. Since the average cross-tier interference from the macrocell gradually decreases as the number of beams decreases, the beam subset selection strategy is capable of providing a spatial opportunity to the femtocell network. This spatial opportunity enables the femtocell network to take advantage of the selectivity arising from the correlation between the interference channel and the precoding matrix. Therefore, we also propose opportunistic channel selection and distributed power control strategies for the femtocell network. Both analytical and numerical results show that the proposed strategies collaboratively reduce the cross-tier interference in two-tier femtocell networks. 
URL : http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=5594700 
Download : http://mirinae.yonsei.ac.kr/?module=file...a01206f957 
Sungsoo Park; Woohyun Seo; Youngju Kim; Sungmook Lim; Daesik Hong; , "Beam Subset Selection Strategy for Interference Reduction in Two-Tier Femtocell Networks," Wireless Communications, IEEE Transactions on , vol.9, no.11, pp.3440-3449, November 2010
doi: 10.1109/TWC.2010.092410.091171
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5594700&isnumber=5626930
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» [IEEE Trans. Wireless Commun.] Sungsoo Park, Woohyun Seo, Youngju Kim, Sungmook Lim, and Daesik Hong, "Beam Subset Selection Strategy for Interference Reduction in Two-tier Femtocell Networks," IEEE Trans. Wireless Commun., Nov. 2010 file Published  2010-11 
1 [IEEE Trans. Wireless Commun.] Youngju Kim, Sungeun Lee, and Daesik Hong, "Performance Analysis of Two-tier Femtocell Networks with Outage Constraints," IEEE Trans. Wireless Commun., Sept. 2010 file Published  2010-09