Analysis of spectral efficiency and energy efficiency interrelationship in cellular networks with outage constraint

2012 ◽  
Author(s):  
Jaya Rao ◽  
Abraham O. Fapojuwo
Keyword(s):  
Energy Efficiency ◽  
Cellular Networks ◽  
Spectral Efficiency

scholarly journals Adaptive Interference Mitigation with User Grouping for Fast Transmission in Cellular Networks

2018 ◽  
Vol 10 (2) ◽  
pp. 702
Author(s):  
Hadhrami Ab. Ghani ◽  
Azlan Abd Aziz ◽  
Azizul Azizan ◽  
Salwani Mohd Daud
Keyword(s):  
Energy Efficiency ◽  
Cellular Networks ◽  
Spectral Efficiency ◽  
Interference Cancellation ◽  
Interference Mitigation ◽  
Minimum Mean Square Error ◽  
Error Rates ◽  
User Grouping ◽  
Mitigation Techniques ◽  
Fast Transmission

Designing uplink systems which group users with adaptive interference mitigation techniques is the objective of this research. Reduction in error rates and improvement in the energy efficiency is expected with this approach in addition to spectral efficiency. This paper reports a study on interference mitigation and transmission designs for groups of users in the uplinks. New formulations for the interference mitigation are produced based on the minimum mean square error and successive interference cancellation approach. By reducing the interference, the energy efficiency can be maintained and improved although the number of users per group increases. The measured error rates of this approach with user grouping achieve gains between 1 to 3 dB against that of the existing approach. With reduced complexity, the proposed scheme should be viable for practical deployment.

scholarly journals Adaptive Interference Mitigation with User Grouping for Fast Transmission in Cellular Networks

2018 ◽  
Vol 10 (2) ◽  
pp. 704
Author(s):  
Hadhrami Ab. Ghani ◽  
Azlan Abd Aziz ◽  
Azizul Azizan ◽  
Salwani Mohd Daud
Keyword(s):  
Energy Efficiency ◽  
Cellular Networks ◽  
Spectral Efficiency ◽  
Interference Cancellation ◽  
Interference Mitigation ◽  
Minimum Mean Square Error ◽  
Error Rates ◽  
User Grouping ◽  
Mitigation Techniques ◽  
Fast Transmission

Designing uplink systems which group users with adaptive interference mitigation techniques is the objective of this research. Reduction in error rates and improvement in the energy efficiency is expected with this approach in addition to spectral efficiency. This paper reports a study on interference mitigation and transmission designs for groups of users in the uplinks. New formulations for the interference mitigation are produced based on the minimum mean square error and successive interference cancellation approach. By reducing the interference, the energy efficiency can be maintained and improved although the number of users per group increases. The measured error rates of this approach with user grouping achieve gains between 1 to 3 dB against that of the existing approach. With reduced complexity, the proposed scheme should be viable for practical deployment.

scholarly journals Spectral and Energy Efficiencies in mmWave Cellular Networks for Optimal Utilization

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Abdulbaset M. Hamed ◽  
Raveendra K. Rao
Keyword(s):  
Energy Efficiency ◽  
Cellular Networks ◽  
Spectral Efficiency ◽  
Cellular Network ◽  
Channel Model ◽  
Signal To Noise Ratio ◽  
Base Stations ◽  
Spectrum Efficiency ◽  
Line Of Sight ◽  
Model Parameters

Millimeter wave (mmWave) spectrum has been proposed for use in commercial cellular networks to relieve the already severely congested microwave spectrum. Thus, the design of an efficient mmWave cellular network has gained considerable importance and has to take into account regulations imposed by government agencies with regard to global warming and sustainable development. In this paper, a dense mmWave hexagonal cellular network with each cell consisting of a number of smaller cells with their own Base Stations (BSs) is presented as a solution to meet the increasing demand for a variety of high data rate services and growing number of users of cellular networks. Since spectrum and power are critical resources in the design of such a network, a framework is presented that addresses efficient utilization of these resources in mmWave cellular networks in the 28 and 73 GHz bands. These bands are already an integral part of well-known standards such as IEEE 802.15.3c, IEEE 802.11ad, and IEEE 802.16.1. In the analysis, a well-known accurate mmWave channel model for Line of Sight (LOS) and Non-Line of Sight (NLOS) links is used. The cellular network is analyzed in terms of spectral efficiency, bit/s, energy efficiency, bit/J, area spectral efficiency, bit/s/m2, area energy efficiency, bit/J/m2, and network latency, s/bit. These efficiency metrics are illustrated, using Monte Carlo simulation, as a function of Signal-to-Noise Ratio (SNR), channel model parameters, user distance from BS, and BS transmission power. The efficiency metrics for optimum deployment of cellular networks in 28 and 73 GHz bands are identified. Results show that 73 GHz band achieves better spectrum efficiency and the 28 GHz band is superior in terms of energy efficiency. It is observed that while the latter band is expedient for indoor networks, the former band is appropriate for outdoor networks.

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