Beam interference suppression in multi-cell millimeter wave communications

Due to the increase in the number of users, beam switching is used for suppressing interference, which leads to higher computational complexity in multi-cell millimeter wave communications. In order to resolve this problem, a beam interference model is introduced, and a lower complexity beam interfe...

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Main Authors: Zufan Zhang, Honghui Yu
Format: Article
Language:English
Published: KeAi Communications Co., Ltd. 2019-08-01
Series:Digital Communications and Networks
Online Access:http://www.sciencedirect.com/science/article/pii/S2352864817303589
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author Zufan Zhang
Honghui Yu
author_facet Zufan Zhang
Honghui Yu
author_sort Zufan Zhang
collection DOAJ
description Due to the increase in the number of users, beam switching is used for suppressing interference, which leads to higher computational complexity in multi-cell millimeter wave communications. In order to resolve this problem, a beam interference model is introduced, and a lower complexity beam interference suppression algorithm based on user grouping is proposed. The proposed algorithm operates beam switching and multi-cell cooperative transmission for a part of the users when there exists beam interference due to high user density. In particular, considering the distinct interference suffered by each user, the proposed dual-threshold user grouping method can effectively solve the frequent switching problem at the base station caused by multi-cell cooperative transmission in multi-cell environments. Simulation results show that the proposed algorithm can reduce the computational complexity of beam switching and approach ideal system capacity, compared with conventional interference suppression algorithms that do not involve grouping of users. Keywords: Millimeter wave, Beam interference, Beam switching, User grouping, Multi-cell cooperative transmission
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spelling doaj.art-df5830758680463c9e6b1a90d96ec1f02022-12-21T22:54:54ZengKeAi Communications Co., Ltd.Digital Communications and Networks2352-86482019-08-0153196202Beam interference suppression in multi-cell millimeter wave communicationsZufan Zhang0Honghui Yu1School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, ChinaCorresponding author.; School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, ChinaDue to the increase in the number of users, beam switching is used for suppressing interference, which leads to higher computational complexity in multi-cell millimeter wave communications. In order to resolve this problem, a beam interference model is introduced, and a lower complexity beam interference suppression algorithm based on user grouping is proposed. The proposed algorithm operates beam switching and multi-cell cooperative transmission for a part of the users when there exists beam interference due to high user density. In particular, considering the distinct interference suffered by each user, the proposed dual-threshold user grouping method can effectively solve the frequent switching problem at the base station caused by multi-cell cooperative transmission in multi-cell environments. Simulation results show that the proposed algorithm can reduce the computational complexity of beam switching and approach ideal system capacity, compared with conventional interference suppression algorithms that do not involve grouping of users. Keywords: Millimeter wave, Beam interference, Beam switching, User grouping, Multi-cell cooperative transmissionhttp://www.sciencedirect.com/science/article/pii/S2352864817303589
spellingShingle Zufan Zhang
Honghui Yu
Beam interference suppression in multi-cell millimeter wave communications
Digital Communications and Networks
title Beam interference suppression in multi-cell millimeter wave communications
title_full Beam interference suppression in multi-cell millimeter wave communications
title_fullStr Beam interference suppression in multi-cell millimeter wave communications
title_full_unstemmed Beam interference suppression in multi-cell millimeter wave communications
title_short Beam interference suppression in multi-cell millimeter wave communications
title_sort beam interference suppression in multi cell millimeter wave communications
url http://www.sciencedirect.com/science/article/pii/S2352864817303589
work_keys_str_mv AT zufanzhang beaminterferencesuppressioninmulticellmillimeterwavecommunications
AT honghuiyu beaminterferencesuppressioninmulticellmillimeterwavecommunications