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Distributed Downlink Beamforming in Cellular Networks

Boon Loong Ng, Jamie Evans, Stephen Hanly
2007 2007 IEEE International Symposium on Information Theory  
We consider a cellular network where base stations can cooperate to determine the signals to be transmitted on the downlink.  ...  Using a particular downlink beamformer structure, we recast our downlink beamforming problem as a virtual linear minimum mean square error (LMMSE) estimation problem.  ...  Hanly are with the ARC Special Research Centre for Ultra-Broadband Information Networks (CUBIN), an affiliated program of National ICT Australia.  ... 
doi:10.1109/isit.2007.4557195 dblp:conf/isit/NgEH07 fatcat:hjty5rla6veznih4idqaubqsmi

Distributed Downlink Beamforming With Cooperative Base Stations

Boon Loong Ng, Jamie S. Evans, Stephen V. Hanly, Defne Aktas
2008 IEEE Transactions on Information Theory  
In this paper, we consider multicell processing on the downlink of a cellular network to accomplish "macrodiversity" transmit beamforming.  ...  For 2-D cellular networks, we remodel the network as a factor graph and present a distributed beamforming algorithm based on the sum-product algorithm.  ...  DISTRIBUTED DOWNLINK BEAMFORMING FOR HEXAGONAL CELLULAR ARRAY The 1-D cellular array model has its uses, but most cellular networks have a 2-D aspect, and the hexagonal cellular array is the traditional  ... 
doi:10.1109/tit.2008.2006426 fatcat:feitmrgf7zc2nlcx2lfvc2uj64

Multicell Coordination via Joint Scheduling, Beamforming, and Power Spectrum Adaptation

Wei Yu, Taesoo Kwon, Changyong Shin
2013 IEEE Transactions on Wireless Communications  
The mitigation of intercell interference is a central issue for future generation wireless cellular networks where frequencies are reused aggressively and where hierarchical cellular structures may heavily  ...  The proposed system is shown to significantly improve the overall network throughput while maintaining fairness as compared to a conventional network with per-cell zero-forcing beamforming and with fixed  ...  Introduction Intercell interference is a fundamental limiting factor in wireless cellular networks.  ... 
doi:10.1109/twc.2013.052313.121128 fatcat:4l7rma6birerxd3ghdkepmvbzu

Multicell coordination via joint scheduling, beamforming and power spectrum adaptation

Wei Yu, Taesoo Kwon, Changyong Shin
2011 2011 Proceedings IEEE INFOCOM  
The mitigation of intercell interference is a central issue for future generation wireless cellular networks where frequencies are reused aggressively and where hierarchical cellular structures may heavily  ...  The proposed system is shown to significantly improve the overall network throughput while maintaining fairness as compared to a conventional network with per-cell zero-forcing beamforming and with fixed  ...  Introduction Intercell interference is a fundamental limiting factor in wireless cellular networks.  ... 
doi:10.1109/infcom.2011.5935083 dblp:conf/infocom/YuKS11 fatcat:gmptsx2pcja2nisslw2i33uezm

Transmit beamforming with cooperative base stations

Boon Loong Ng, J.S. Evans, S.V. Hanly, D. Aktas
2005 Proceedings. International Symposium on Information Theory, 2005. ISIT 2005.  
We consider a cellular network where base stations can cooperate to determine the signals to be transmitted on the downlink.  ...  The downlink beamformer of interest is generalised from some transmit beamformers that have been shown to meet various optimality criteria in the literature.  ...  DISTRIBUTED DOWNLINK BEAMFORMING A.  ... 
doi:10.1109/isit.2005.1523579 dblp:conf/isit/NgEHA05 fatcat:xfie3qrnrfam3aoeduur4sv5na

Two-Way Synchronization for Coordinated Multicell Retrodirective Downlink Beamforming

R. D. Preuss, D. R. Brown
2011 IEEE Transactions on Signal Processing  
Index Terms-Antenna arrays, base station coordination, carrier frequency synchronization, carrier phase synchronization, cellular radio, distributed beamforming, multicell wireless networks, synchronization  ...  Coordinated multicell downlink transmission has recently been proposed as a technique that can enable spectrally efficient communication in cellular networks.  ...  Distributed downlink beamforming and greedy scheduling was studied in coordinated cellular networks in [3] and [4] .  ... 
doi:10.1109/tsp.2011.2162329 fatcat:5mkwwbh74vfdzh4i4covsvvbvi

Sum Power Minimization for Cellular Systems With Underlay D2D Communications

Amin Ghazanfari, Antti Tölli, Harri Pennanen
2014 Proceedings of the 9th International Conference on Cognitive Radio Oriented Wireless Networks  
We propose joint power control and beamforming algorithms to solve the power minimization problem optimally both in uplink and downlink.  ...  Results also illustrate that the power consumption of the network is highly affected by the locations of the cellular and D2D users, and whether the resources are shared in the uplink or downlink. I.  ...  In [7] , the authors proposed a heuristic interference management approach for the downlink resource sharing in D2D underlaying cellular networks.  ... 
doi:10.4108/icst.crowncom.2014.255360 dblp:conf/crowncom/GhazanfariTP14 fatcat:nxpmlxgdf5eulny6k5dpk4fvre

Millimeter Wave Picocellular System Evaluation for Urban Deployments [article]

Mustafa Riza Akdeniz, Yuanpeng Liu, Sundeep Rangan, Elza Erkip
2014 arXiv   pre-print
However, the propagation of mmW signals in outdoor non line-of-sight (NLOS) links remains challenging and the feasibility of wide-area mmW cellular networks is far from clear.  ...  It is found that, even under conservative propagation assumptions, mmW systems with cell radii of 100m can offer an order of magnitude increase in capacity over current state-of-the-art 4G cellular networks  ...  Also, although the SINR distribution for cellular networks in traditional frequencies is not plotted here, distributions found in cellular evaluation studies [35] appear to match reasonably closely with  ... 
arXiv:1304.3963v2 fatcat:3gj7vsucxfdu3irjeqb6gjlcq4

Relay-Aided MIMO Cellular Networks Using Opposite Directional Interference Alignment [article]

Hoyoun Kim, Jong-Seon No
2017 arXiv   pre-print
Extension of proposed scheme for downlink and full-duplex network are further described in this paper.  ...  conventional IA schemes for cellular network.  ...  Using linear beamforming at the relay and uplink-downlink duality, we extended the proposed scheme with the BS beamformer design to a downlink cellular network without UE beamforming or CSI handling.  ... 
arXiv:1702.05853v2 fatcat:suoolvfqwvbenj37kdqqmn2f2e

Cellular capacity maximization via robust downlink beamforming

Venkatesh Chebolu, Siddharth Deshmukh
2015 2015 International Conference on Communications and Signal Processing (ICCSP)  
In this paper we propose an optimized multi-cell downlink beamforming solution in which our objective is to maximize capacity of a cellular network.  ...  Next, in order to compute robust beamforming vector we accommodate channel estimation error in our formulation.  ...  BS (CSIT) in downlink beamforming in COMP system is very essential for effective downlink beamforming towards the desired user terminal.  ... 
doi:10.1109/iccsp.2015.7322556 fatcat:666dj7qubja5lis3vkm7dgogdq

Transmit beamforming and power control for cellular wireless systems

F. Rashid-Farrokhi, K.J. Ray Liu, L. Tassiulas
1998 IEEE Journal on Selected Areas in Communications  
In a nonreciprocal network, where the uplink and downlink channel responses are different, the proposed transmit beamforming algorithm needs to be implemented in a centralized system, and it requires the  ...  Joint power control and beamforming schemes are proposed for cellular systems where adaptive arrays are used only at base stations.  ...  In TDD networks where the uplink and downlink channels are reciprocal, this algorithm can be implemented using only local measurements and in a distributed fashion without any performance degradation.  ... 
doi:10.1109/49.730452 fatcat:msumbhswavdtrobpiiawbnoifa

Cooperative multi-user MIMO based on limited feedback in downlink OFDM systems

Lars Thiele, Malte Schellmann, Thomas Wirth, Volker Jungnickel
2008 2008 42nd Asilomar Conference on Signals, Systems and Computers  
We focus on how to realize a decentralized and limited cooperative downlink transmission in a multi-cellular network.  ...  We demonstrate potential capacity gains in a cellular orthogonal frequency division multiplexing system and their scaling with the number of cooperating antenna arrays.  ...  ACKNOWLDEGEMENTS The authors are grateful for financial support from the German Ministry of Education and Research (BMBF) in the national collaborative project EASY-C under contract No. 01BU0631.  ... 
doi:10.1109/acssc.2008.5074795 fatcat:dr3hgbq3j5fk5ndqou42hrjwsq

Multi-User Downlink Transmit Beamforming for the Broadband Single-Carrier Distributed Antenna Network

Wei Peng, Fumiyuki Adachi
2011 2011 IEEE Vehicular Technology Conference (VTC Fall)  
Keywords-distributed antenna network; downlink transmission; transmit beamforming I.  ...  This paper studies the multi-user downlink transmit beamforming algorithms for the broadband single-carrier distributed antenna network (SC-DAN).  ...  INTRODUCTION Broadband data services of greater than 1 Giga bps (in particular, downlink applications) are demanded in the future wireless communication networks.  ... 
doi:10.1109/vetecf.2011.6092987 dblp:conf/vtc/PengA11 fatcat:kj3u7hslf5hoflsgneyl6hkuja

Coordinated beamforming for the multicell multi-antenna wireless system

Hayssam Dahrouj, Wei Yu
2010 IEEE Transactions on Wireless Communications  
In a conventional wireless cellular system, signal processing is performed on a per-cell basis; out-of-cell interference is treated as background noise.  ...  This paper focuses on a downlink scenario where each remote user is equipped with a single antenna, but where multiple remote users may be active simultaneously in each cell.  ...  Theorem 1: The optimal transmit beamforming problem (3) for the downlink multiuser multi-cellular network can be solved via a dual uplink channel in which the SINR constraints remain the same and the noise  ... 
doi:10.1109/twc.2010.05.090936 fatcat:7vk4wvgglza6bcnd67naqeox7y

Coordinated beamforming for the multi-cell multi-antenna wireless system

Hayssam Dahrouj, Wei Yu
2008 2008 42nd Annual Conference on Information Sciences and Systems  
In a conventional wireless cellular system, signal processing is performed on a per-cell basis; out-of-cell interference is treated as background noise.  ...  This paper focuses on a downlink scenario where each remote user is equipped with a single antenna, but where multiple remote users may be active simultaneously in each cell.  ...  Theorem 1: The optimal transmit beamforming problem (3) for the downlink multiuser multi-cellular network can be solved via a dual uplink channel in which the SINR constraints remain the same and the noise  ... 
doi:10.1109/ciss.2008.4558565 dblp:conf/ciss/DahroujY08 fatcat:vrswhw7xdjgaxjoevgwmx655ky
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