Beomju Kim, Sungmook Lim, Hyungjong Kim, Sangwook Suh, Jonghyung Kwun, Sooyong Choi, Chungyong Lee, Sanghoon Lee, and Daesik Hong, "Non-orthogonal Multiple Access in a Downlink Multiuser Beamforming System," IEEE MILCOM2013, Nov. 2013
[IEEE MILCOM]Status : | Presented |
---|---|
Date : | 2013-11 |
Title : | Non-orthogonal Multiple Access in a Downlink Multiuser Beamforming System |
Authors : | Beomju Kim, Sungmook Lim, Hyungjong Kim, Sangwook Suh, Jonghyung Kwun, Sooyong Choi, Chungyong Lee, Sanghoon Lee, and Daesik Hong |
Conference : | IEEE MILCOM2013 |
Abstract : | In this paper, we propose a non-orthogonal multiple access-based multiuser beamforming (NOMA-BF) system designed to enhance the sum capacity. In the proposed NOMABF system, a single BF vector is shared by two users, so that the number of supportable users can be increased. However, sharing a BF vector leads to interference from other beams as well as from the other user sharing the BF vector. Therefore, to reduce interference and improve the sum capacity, we additionally propose a clustering and power allocation algorithm. This clustering algorithm, which selects two users with high correlation and a large gain- difference between their channels, can reduce the interference from other beams and from the other user as well. Furthermore, power allocation ensures that each user’s transmit power is allocated so as to maximize the sum capacity. Numerical results verify that the proposed NOMA-BF system improves the sum capacity, compared to the conventional multiuser BF system. |
URL : | http://ieeexplore.ieee.org/xpl/articleDe...ing+System |
Download : | http://mirinae.yonsei.ac.kr/?module=file...4ec06a4c51 |
Beomju Kim; Sungmook Lim; Hyungjong Kim; Sangwook Suh; Jonghyung
Kwun; Sooyong Choi; Chungyong Lee; Sanghoon Lee; Daesik Hong,
"Non-orthogonal Multiple Access in a Downlink Multiuser Beamforming System," Military Communications Conference,
MILCOM 2013 - 2013 IEEE ,
vol., no., pp.1278,1283, 18-20 Nov. 2013
doi: 10.1109/MILCOM.2013.218
keywords: {array signal processing;correlation methods;interference
suppression;pattern clustering;vectors;BF vector;NOMA-BF system;clustering
algorithm;correlation;downlink multiuser beamforming system;interference
reduction;non-orthogonal multiple access system;power allocation algorithm;sum
capacity enhancement;Clustering algorithms;Correlation;Interference;Resource management;Silicon
carbide;Transmitters;Vectors;multiuser beamforming;non-orthogonal multiple
access;user clustering},
URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6735800&isnumber=6735577
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