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Power Control in Distributed Cooperative OFDMA Cellular Networks [article]

Mylene Pischella, Jean-Claude Belfiore
2007 arXiv   pre-print
INTRODUCTION Future cellular networks will make use of opportunistic scheduling in cunjunction with effective link adaptation.  ...  As a consequence, new methods must be defined at system level in order to compensate for the absence of a global controller in distributed cellular networks.  ... 
arXiv:cs/0612049v4 fatcat:x7rzo3xbbbf6zcdpexgmlqek4i

On the dimensioning of cellular OFDMA networks

Jean-Marc Kelif, Marceau Coupechoux, Philippe Godlewski
2012 Physical Communication  
In this paper, we address the issue of cellular OFDMA networks dimensioning.  ...  The proposed framework is a powerful tool to study performances of cellular OFDMA networks (e.g. WiMAX, LTE).  ...  Figure 6 : 6 of the various parameters involved in the dimensioning of cellular OFDMA networks.  ... 
doi:10.1016/j.phycom.2011.09.008 fatcat:qezsla64g5gbxk2jbmoyks54jm

Local Interference Coordination in Cellular OFDMA Networks

Marc C. Necker
2007 Vehicular Technology Conference-Fall (VTC-FALL), Proceedings, IEEE  
The currently emerging 802.16e (WiMax) and 3GPP Long Term Evolution (LTE) cellular systems are based on Orthogonal Frequency Division Multiple Access (OFDMA).  ...  As OFDMA is basically a combination of FDM and TDM, it suffers from heavy inter-cell interference if neighboring basestations use the same frequency range.  ...  Conclusion Interference coordination is essential in OFDMA-based cellular networks in order to achieve a high spectral efficiency and solve the problem of inter-cellular interference.  ... 
doi:10.1109/vetecf.2007.368 dblp:conf/vtc/Necker07 fatcat:orgwz5hzhzaxngd5v6zkx37wuu

Channel Asymmetry in Cellular OFDMA-TDD Networks

Ellina Foutekova, Patrick Agyapong, Harald Haas
2008 EURASIP Journal on Wireless Communications and Networking  
This paper studies time division duplex-(TDD-) specific interference issues in orthogonal frequency division multiple access-(OFDMA-) TDD cellular networks arising from various uplink (UL)/downlink (DL  ...  The results show that RTSO networks with DLfavored traffic asymmetries outperform FSA networks for all considered metrics and are robust to LOS between BSs.  ...  Hence, RTSO when combined with OTA-SRR fair scheduling allows the system to retain high spectral efficiency while maintaining fairness in an OFDMA-TDD cellular network with asymmetric traffic.  ... 
doi:10.1155/2008/121546 fatcat:bqyhgtxgwnehjoj6lcn52juj5m

Power Control Factor Selection in Uplink OFDMA Cellular Networks [article]

Suman Kumar, K. Giridhar
2014 arXiv   pre-print
Uplink power control plays a key role on the performance of uplink cellular network.  ...  Therefore, how should a cellular network operator should choose the power control factor. This is the question we attempt to answer in this work.  ...  INTRODUCTION Power control is an important consideration for the uplink cellular networks. It has two modes of operation: closed loop and open loop power control [1] .  ... 
arXiv:1401.4657v2 fatcat:oxbxs5beeneoxjhm23akyakody

Optimization of OFDMA-Based Cellular Cognitive Radio Networks

Yao Ma, Dong In Kim, Zhiqiang Wu
2010 IEEE Transactions on Communications  
In this paper, we study the coexistence and optimization of a multicell cognitive radio network (CRN) which is overlaid with a multicell primary radio network (PRN).  ...  Index Terms-Lagrangian duality optimization, multicell overlaid CRN/PRN, OFDMA, weighted sum rate maximization.  ...  CRN (PRN) Cognitive radio network (Primary radio network).  ... 
doi:10.1109/tcomm.2010.08.080444 fatcat:a3mvgup4hzcffchsfporu3crou

Power control in distributed cooperative OFDMA cellular networks

Mylene Pischella, Jean-claude Belfiore
2008 IEEE Transactions on Wireless Communications  
We propose a Radio Resource Management strategy for the relay channel, made of relayed users identification, resource allocation and power control in an OFDMA-based system.  ...  This value is also consistent with the handover triggering value usually chosen for this type of deployment in cellular networks.  ...  Δ is a parameter that should be set depending on the cellular environment and deployment.  ... 
doi:10.1109/twc.2008.061039 fatcat:dydh4uta4zfjpkopp7b3vxj6eq

OFDMA Cellular Networks with Opportunistic Two-Hop Relays

George Calcev, Jeff Bonta
2009 EURASIP Journal on Wireless Communications and Networking  
We investigate the benefits of two-hop opportunistic relay in time division duplex (TDD) OFDMA cellular network configurations.  ...  The first scenario uses the propagation model and a wide-area 19-cell configuration specified in 802.16 OFDMA cellular standard evaluation methodologies.  ...  To analyze the benefits of two-hop opportunistic relays, we consider an OFDMA 802.16 cellular network.  ... 
doi:10.1155/2009/702659 fatcat:uakl5uglfzcv3pqs2naf5wby4m

Analysis of Blocking Probability in a Relay-based Cellular OFDMA Network [article]

Mahima Mehta, Ranjan Bala Jain, Abhay Karandikar
2014 arXiv   pre-print
Relay deployment in Orthogonal Frequency Division Multiple Access (OFDMA) based cellular networks helps in coverage extension and or capacity improvement.  ...  Traditional methods to compute blocking probability cannot be used in relay based cellular OFDMA networks. In this paper, we present an approach to compute the blocking probability of such networks.  ...  Section II introduces the system model for the downlink of relay based cellular OFDMA network.  ... 
arXiv:1210.3769v2 fatcat:wihyqngdrrewtgketcf4ecq2bi

Energy-Aware Wireless Relay Selection in Load-Coupled OFDMA Cellular Networks [article]

Lei You, Di Yuan, Nikolaos Pappas, Peter Värbrand
2017 arXiv   pre-print
We investigate transmission energy minimization via optimizing wireless relay selection in orthogonal-frequency-division multiple access (OFDMA) networks.  ...  CONCLUSION This paper has provided insights as well as an algorithm for energy-aware relay selection in load-coupled OFDMA cellular networks.  ...  Network Model We consider a heterogeneous cellular network (HetNet) with macro cells (MCs), user equipments (UEs), and relay cells (RCs).  ... 
arXiv:1610.00982v2 fatcat:a3fmmv73vjdh5jpca3t44pdoqi

Dynamic Frequency Allocation in OFDMA Cellular Networks
OFDMA 셀룰러 망에서 동적 주파수 할당 방법

Jong-Chan Lee, Gi-Sung Lee
2013 Journal of the Korea Academia-Industrial cooperation Society  
We propose user and sub-channel priority based resource allocation for mobile multimedia services in the OFDMA systems.  ...  OFDMA 시스템의 효율적인 자원관리를 위하여 다수 의 자원관리 방안이 연구되고 있는데, 사용자 요구의 최 적화를 중시한 자원관리방법과 시스템 사용자 수용 용량 의 최대화를 고려한 자원할당방법이 주로 제안되고 있다 [5-10].  ...  Bashar 등은 이종의 OFDMA 무선망 환경을 위한 자원할당 및 수락 제어 방식을 제안하였다[8]. 이 방 안은 실시간 서비스 위주의 자원할당으로, 비실시간 서비 스의 성능 저하를 야기할 수 있으며, 다양한 서비스의 고 유 특성을 상세하게 고려하지 않았다.  ... 
doi:10.5762/kais.2013.14.6.2992 fatcat:hro3bmbwhncyvjmokfwfo6pgay

Maximizing energy-efficiency in multi-relay OFDMA cellular networks

Kent Tsz Kan Cheung, Shaoshi Yang, Lajos Hanzo
2013 2013 IEEE Global Communications Conference (GLOBECOM)  
) cellular network.  ...  Additionally, we explore the relationship between the achievable SE and EE in the cellular network upon increasing the number of active users.  ...  The authors of [8] formulated the EEM problem in a OFDMA cellular network under a maximum total power constraint, but relaying was not considered.  ... 
doi:10.1109/glocom.2013.6831493 dblp:conf/globecom/CheungYH13 fatcat:z264y6fl55e2lf4udjhlnot7ja

Integrated scheduling and interference coordination in cellular OFDMA networks

Marc C. Necker
2007 2007 Fourth International Conference on Broadband Communications, Networks and Systems (BROADNETS '07)  
The currently emerging 802.16e (WiMAX) and 3GPP Long Term Evolution (LTE) cellular systems are based on Orthogonal Frequency Division Multiple Access (OFDMA).  ...  OFDMA suffers from heavy inter-cell interference if neighboring base stations use the same frequency range.  ...  CONCLUSION In this paper, we solved the problem of interference coordination in cellular OFDMA networks by means of graph coloring.  ... 
doi:10.1109/broadnets.2007.4550483 dblp:conf/broadnets/Necker07 fatcat:asy7yoz7xbhp5m22ftm4p7bvqq

Radio resource allocation in OFDMA multihop cellular cooperative networks

Cheol Jeong, Hyung-Myung Kim
2008 2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications  
Multihop cellular networks (MeNs) is an extension of single hop cellular networks (SCNs) having benefits of a fixed base station and flexible ad hoc networks.  ...  In this paper, we have proposed the algorithm which solves the joint subchannel allocation, routing and power allocation problem in OFDMA MCNs.  ...  The OFDMA system in a multihop cellular network is considered. There are K mobile users and M mobile RSs served by a BS. The bandwidth of the system is divided into N subchannels.  ... 
doi:10.1109/pimrc.2008.4699746 dblp:conf/pimrc/JeongK08 fatcat:ohkdvp3nhvfabbxtx2avte4mdy

Distributed power allocation for D2D communications underlaying/overlaying OFDMA cellular networks [article]

Andrea Abrardo, Marco Moretti
2016 arXiv   pre-print
The implementation of device-to-device (D2D) underlaying or overlaying pre-existing cellular networks has received much attention due to the potential of enhancing the total cell throughput, reducing power  ...  In this paper we propose a distributed power allocation scheme for D2D OFDMA communications and, in particular, we consider the two operating modes amenable to a distributed implementation: dedicated and  ...  This requires a form of centralized control, which actively involves the cellular network.  ... 
arXiv:1609.04535v1 fatcat:pzhkr6nudjf4rnilc46peqj63q
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