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Energy Efficient and Subcarrier Allocation for OFDMA based Cooperative Relay Networks

Vijayabharathi. G, Vijayalakshmi.A Vijayalakshmi.A
2012 International Journal of Computer Applications  
savings for uplink cellular OFDMA transmissions.  ...  The previous works in this area focused on optimizing energy efficiency by maximizing the instantaneous bits-per-Joule metric through Equal-Power Allocation (EPA) schemes resulted in significant energy  ...  To further maximize spectral efficiency, it is also preferable to reuse spectrum opportunistically under OFDMA resource allocation; in fact future cellular networks are evolving toward frequency reuse  ... 
doi:10.5120/7308-0525 fatcat:xdfojn456bg4fdbdsp4pnfwhgi

Evaluation of Energy-Efficiency Problem in Orthogonal Frequency Division Multiple Access Cellular Networks

İlhan Baştürk
2019 Celal Bayar Universitesi Fen Bilimleri Dergisi  
In this study, the energy-efficiency (EE) problem is investigated for downlink Orthogonal Frequency Division Multiple Access (OFDMA) cellular networks.  ...  Simulation results are obtained to confirm the performance of the presented scheme in terms of energy-efficiency and total data rate.  ...  Conclusion In this paper, we have focused on the energy-efficiency problem in OFDMA downlink cellular networks.  ... 
doi:10.18466/cbayarfbe.416583 fatcat:q6bt63htsjbthdh4oujf3jlrma

Energy-efficient communication for user-relay aided cellular networks with OFDMA

İlhan Baştürk, Yunfei Chen, Mohamed-Slim Alouini
2019 Physical Communication  
In this paper, energy-efficient communication is investigated for the orthogonal frequencydivision multiple-access (OFDMA) based user-relay aided cellular networks that is envisioned as a promising technology  ...  It is urgent to find solutions that can satisfy the high data rate quality of service (QoS) requirements from users and obtain high energy-efficiency (EE) for the network at the same time.  ...  Thus, in this paper, we focus on the energy-efficient communication in downlink OFDMA cellular networks using mobile relaying.  ... 
doi:10.1016/j.phycom.2018.12.021 fatcat:yxyuatgukjf5dk3xvg6gfypgi4

A Novel Architecture for 5G Ultra Dense Heterogeneous Cellular Network

Sabeen Tahir
2018 International Journal of Advanced Computer Science and Applications  
By reducing the area of the cell, the frequency efficiency and network coverage are improved.  ...  The heterogeneity of different types of base stations (macro area network base station, micro-cell base station, and small cell base station) provides efficient network coverage.  ...  The energy efficiency of a massive MIMO system depends on the circuit energy consumption.  ... 
doi:10.14569/ijacsa.2018.091123 fatcat:kszqadypjvdmjcbgojgkhy42xy

NOVEL ENERGY-SAVING TRANSMISSIONS IN OFDMA-BASED MULTICARRIER BASE STATIONS BY RADIO RESOURCE MANAGEMENT

Yhareen Tej, Nnikhil Raidu, Ravi KumarCV
2017 International Journal of Advanced Research  
in varied energy-saving styles for cellular systems.  ...  resource allocation problem needs M2M and H2H user"s energy efficient resource allocation in uplink LTE networks under statistical QoS provisioning the dual problem.  ...  ( B) Green Wireless Communication:-Green wireless communication technology is working on efficient energy utilization of future communication networks.  ... 
doi:10.21474/ijar01/4054 fatcat:5sv5g5o64jf4ndobuwe7ugmmuu

Energy-efficient wireless communications: tutorial, survey, and open issues

Geoffrey Li, Zhikun Xu, Cong Xiong, Chenyang Yang, Shunqing Zhang, Yan Chen, Shugong Xu
2011 IEEE wireless communications  
Therefore, energy-efficient communications have been paid increasing attention under the background of limited energy resource and environmental-friendly transmission behaviors.  ...  Some valuable topics on energy-efficient design are also identified for future research.  ...  Various energy-efficient methods have been proposed for different layers of wireless networks. For network planning, the impact of cell sizes on EE in cellular networks has been studied [2] .  ... 
doi:10.1109/mwc.2011.6108331 fatcat:2j77jyohc5e6bd7jcpyxwr56re

Swarm Optimization based Radio Resource Allocation for Dense Devices D2D Communication

O. Hayat, R. Ngah, Siti Z.
2018 International Journal of Advanced Computer Science and Applications  
Using this advantage, an efficient RR allocation algorithm based on swarm optimization is proposed in this paper, that allows utmost spatial reuse in multiusers and OFDMA networks.  ...  It enhances the capacity (Bit/Hz), overall system throughput and spectral efficiency with respect to sub-carriers in OFDMA networks.  ...  ACKNOWLEDGMENT The authors would like to express their gratitude to the Ministry of Higher Education (MOHE) in Malaysia and Universiti Teknologi Malaysia (UTM) for providing the financial support for this  ... 
doi:10.14569/ijacsa.2018.090636 fatcat:yjeqzwl2s5cedfamf6ukmfzgrq

Bandwidth Expansion Mode Under Component Carrier based scheme in LTE Networks

2019 International journal of recent technology and engineering  
Through component carrier based scheme the energy efficient LTE networks can be realized and energy efficiency can be improved to some extent through component carrier based scheme  ...  Wireless cellular networks are an underlying for mobile phones, personal communication systems etc. There is a dramatic growth of wireless cellular networks in number of mobile phones.  ...  OFDM COMPONENT CARRIERSBased on the OFDMA there two component carrier techniques through which the energy efficiency can be improved.  ... 
doi:10.35940/ijrte.c3944.098319 fatcat:ybu3fkouarbj5nhhg7fuamp7ba

Guest Editorial Spectrum and Energy Efficient Design of Wireless Communication Networks: Part I

Yang Yang, Xiaohu You, Markku Juntti, Cheng-Xiang Wang, Harry Leib, Zhi Ding
2013 IEEE Journal on Selected Areas in Communications  
In recent years, energy and power efficiencies of wireless networks have become more crucial because of the steadily rising energy cost and environmental concerns.  ...  Thus, there is an urgent need to address key challenges and state-of-the-art solutions for joint spectrum and energy efficient design (SEED) and optimization of wireless communication networks.  ...  The paper by Soh, Quek, Kountouris and Shin, entitled, "Energy Efficient Heterogeneous Cellular Networks," investigates the design of energy efficient cellular networks through the deployment of sleeping  ... 
doi:10.1109/jsac.2013.130501 fatcat:xka7mptrz5hxhcjzne7q5zzmp4

An energy-efficient Macro-micro hierarchical structure with resource allocation in OFDMA cellular systems

Xin Chen, Zhiyong Feng, Dong Yang
2012 7th International Conference on Communications and Networking in China  
Macro-micro networks, as typical hierarchical net works, are advanced in increasing the network capacity as weD as in decreasing the network energy consumption during peak hours.  ...  However, the fluctuation of traffic load over space and time brings challenges and opportunities in energy saving.  ...  In [9] , the impact of cell size on energy efficiency in cellular networks has been analogized. It has been presented that reducing cell size may increase the energy efficiency.  ... 
doi:10.1109/chinacom.2012.6417538 dblp:conf/chinacom/ChenFY12 fatcat:ujlrfcbqvvfu7p7qanu2lmasfa

Non-Orthogonal Multiple Access (NOMA) for 5G Networks [chapter]

Refik Caglar Kizilirmak
2016 Towards 5G Wireless Networks - A Physical Layer Perspective  
Finally, we discuss the spectral efficiency (SE) of the networks that employ NOMA with its relations with energy efficiency (EE).  ...  We further discuss the impacts of imperfect receivers on the performance of NOMA networks.  ...  Spectral efficiency and energy efficiency Most analysis so far included the throughput performance of the network.  ... 
doi:10.5772/66048 fatcat:wakht6nnj5aypoclw6t53y3bda

Enhanced Energy Efficiency in Dense Femto Cell Networks Using Modified Spreading Factor

Gomathi. D, Ramya Jothykumar
2017 International Journal of Engineering Research and  
So that the energy efficiency of the dense FBS network can be maximized by increasing throughput of the system.  ...  The energy efficiency of dense FBS networks can be maximized; by assigning transmission power in terms of spreading factor.  ...  There are several publications on OFDMA based femtocell networks, which propose better flexibility in terms of allocation of frequency resources.  ... 
doi:10.17577/ijertv6is040399 fatcat:rbjgiafb7ve27eflyilmeilpnm

Energy-Efficient Scheduling and Power Allocation in Downlink OFDMA Networks with Base Station Coordination [article]

Luca Venturino and Alessio Zappone and Chiara Risi and Stefano Buzzi
2014 arXiv   pre-print
This paper addresses the problem of energy-efficient resource allocation in the downlink of a cellular OFDMA system.  ...  Results show that the maximization of the energy efficiency is approximately equivalent to the maximization of the spectral efficiency for small values of the maximum transmit power, while there is a wide  ...  The biggest efforts to increase the energy efficiency of a wireless network are concentrated on the access network, since it consumes the largest portion of energy [17] .  ... 
arXiv:1405.2962v1 fatcat:hcgzhsymbrdjvnwgwk5epmtghm

GRANULARITY OF EFFICIENT ENERGY SAVING IN WIRELESS SENSOR NETWORKS

M. Chithik Raja .
2013 International Journal of Research in Engineering and Technology  
This paper focuses on increasing the granularity of Efficient Energy Saving units without compromising flexibility.  ...  This is carried out by matching the granularity to the degree-of-freedom processing in most wireless Networks.  ...  Thus, the effect of signaling overhead on energy-efficient OFDMA design should be further studied.  ... 
doi:10.15623/ijret.2013.0204024 fatcat:5jvn4jvxxzasrm3gi3zoppmipe

Active-mode power optimization in OFDMA-based wireless networks

Sergey Andreev, Yevgeni Koucheryavy, Nageen Himayat, Pavel Gonchukov, Andrey Turlikov
2010 2010 IEEE Globecom Workshops  
Energy efficiency is increasingly important for wireless cellular systems due to the limited battery resources of mobile clients.  ...  In this paper, we evaluate the performance of such techniques using realistic cellular system simulation model. Specifically, we focus on the emerging fourth generation IEEE 802.16m standard.  ...  In [6] the problem of energy efficient transmission in wireless networks is studied for flat fading OFDMA channels.  ... 
doi:10.1109/glocomw.2010.5700433 fatcat:vahobhxisnhhpfmqjszak4fgse
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