Energy- and Spectral-Efficiency Tradeoff for Distributed Antenna Systems with Proportional Fairness

Energy efficiency(EE) has caught more and more attention in future wireless communications due to steadily rising energy costs and environmental concerns. In this paper, we propose an EE scheme with proportional fairness for the downlink multiuser distributed antenna systems (DAS). Our aim is to maximize EE, subject to constraints on overall transmit power of each remote access unit (RAU), bit-error rate (BER), and proportional data rates. We exploit multi-criteria optimization method to systematically investigate the relationship between EE and spectral efficiency (SE). Using the weighted sum method, we first convert the multi-criteria optimization problem, which is extremely complex, into a simpler single objective optimization problem. Then an optimal algorithm is developed to allocate the available power to balance the tradeoff between EE and SE. We also demonstrate the effectiveness of the proposed scheme and illustrate the fundamental tradeoff between energy- and spectral-efficient transmission through computer simulation.

[1]  Yiwei Thomas Hou,et al.  On optimal throughput-energy curve for multi-hop wireless networks , 2011, 2011 Proceedings IEEE INFOCOM.

[2]  Geoffrey Ye Li,et al.  Energy-efficient link adaptation in frequency-selective channels , 2010, IEEE Transactions on Communications.

[3]  Kyoung-Jae Lee,et al.  Transmission Schemes Based on Sum Rate Analysis in Distributed Antenna Systems , 2011, IEEE Transactions on Wireless Communications.

[4]  Sotirios Karachontzitis,et al.  Low-complexity resource allocation and its application to distributed antenna systems [Coordinated and Distributed MIMO] , 2010, IEEE Wireless Communications.

[5]  Gustavo de Veciana,et al.  A cross-layer approach to energy efficiency for adaptive MIMO systems exploiting spare capacity , 2009, IEEE Transactions on Wireless Communications.

[6]  Gerhard Fettweis,et al.  Energy-Efficient Multi-Carrier Link Adaptation with Sum Rate-Dependent Circuit Power , 2010, 2010 IEEE Global Telecommunications Conference GLOBECOM 2010.

[7]  Daniel Pérez Palomar,et al.  A tutorial on decomposition methods for network utility maximization , 2006, IEEE Journal on Selected Areas in Communications.

[8]  Ying Wang,et al.  Schemes of Power Allocation and Antenna Port Selection in OFDM Distributed Antenna Systems , 2010, 2010 IEEE 72nd Vehicular Technology Conference - Fall.

[9]  Andrea J. Goldsmith,et al.  Energy-efficiency of MIMO and cooperative MIMO techniques in sensor networks , 2004, IEEE Journal on Selected Areas in Communications.

[10]  Geoffrey Ye Li,et al.  Distributed Interference-Aware Energy-Efficient Power Optimization , 2011, IEEE Transactions on Wireless Communications.

[11]  Geoffrey Ye Li,et al.  A survey of energy-efficient wireless communications , 2013, IEEE Communications Surveys & Tutorials.

[12]  Geoffrey Ye Li,et al.  Fundamental trade-offs on green wireless networks , 2011, IEEE Communications Magazine.

[13]  Geoffrey Ye Li,et al.  Energy Efficient Design in Wireless OFDMA , 2008, 2008 IEEE International Conference on Communications.

[14]  G. Fettweis,et al.  ICT ENERGY CONSUMPTION – TRENDS AND CHALLENGES , 2008 .

[15]  Geoffrey Y. Li,et al.  Cross-layer optimization for energy-efficient wireless communications: a survey , 2009, Wirel. Commun. Mob. Comput..

[16]  Huiling Zhu,et al.  Performance Comparison Between Distributed Antenna and Microcellular Systems , 2011, IEEE Journal on Selected Areas in Communications.

[17]  Vijay K. Bhargava,et al.  Green Cellular Networks: A Survey, Some Research Issues and Challenges , 2011, IEEE Communications Surveys & Tutorials.

[18]  Xiaohu You,et al.  Energy Efficiency and Spectral Efficiency Tradeoff in Downlink Distributed Antenna Systems , 2012, IEEE Wireless Communications Letters.

[19]  Xiaohu You,et al.  Spectral Efficiency of Distributed MIMO Cellular Systems in a Composite Fading Channel , 2008, 2008 IEEE International Conference on Communications.

[20]  Xiaohu You,et al.  Energy efficiency comparison between distributed and co‐located MIMO systems , 2014, Int. J. Commun. Syst..

[21]  Andrea J. Goldsmith,et al.  Energy-constrained modulation optimization , 2005, IEEE Transactions on Wireless Communications.

[22]  Matthias Ehrgott,et al.  Multicriteria Optimization , 2005 .

[23]  Stephen P. Boyd,et al.  Convex Optimization , 2004, Algorithms and Theory of Computation Handbook.

[24]  Xiaoxin Qiu,et al.  On the performance of adaptive modulation in cellular systems , 1999, IEEE Trans. Commun..

[25]  Jeffrey G. Andrews,et al.  Adaptive resource allocation in multiuser OFDM systems with proportional rate constraints , 2005, IEEE Transactions on Wireless Communications.

[26]  Gürkan Gür,et al.  Green wireless communications via cognitive dimension: an overview , 2011, IEEE Network.

[27]  Ming Chen,et al.  Cooperative distributed antenna systems for mobile communications [Coordinated and Distributed MIMO] , 2010, IEEE Wireless Communications.

[28]  Cong Xiong,et al.  Energy- and Spectral-Efficiency Tradeoff in Downlink OFDMA Networks , 2011, IEEE Trans. Wirel. Commun..

[29]  Biljana Badic,et al.  Energy Efficient Radio Access Architectures for Green Radio: Large versus Small Cell Size Deployment , 2009, 2009 IEEE 70th Vehicular Technology Conference Fall.

[30]  Xiaohu You,et al.  Cell Edge Performance of Cellular Mobile Systems , 2011, IEEE Journal on Selected Areas in Communications.

[31]  Lei Deng,et al.  A Unified Energy Efficiency and Spectral Efficiency Tradeoff Metric in Wireless Networks , 2013, IEEE Communications Letters.

[32]  Cong Xiong,et al.  Energy- and Spectral-Efficiency Tradeoff in Downlink OFDMA Networks , 2011, IEEE Transactions on Wireless Communications.