Energy and Spectral Efficiency in Next-Generation Cellular Networks

Abstract:

In this talk, we will first discuss the importance of energy efficiency
(EE) in next-generation multi-cell heterogenous networks (HetNets). We
will than discuss the tradeoff of EE and and spectral efficiency (SE) in
multi-cell HetNets.

Our objective is to maximize both EE and SE of the network while 
satisfying the rate requirement of users. We use multi-objective 
optimization techniques to define the objective function. We propose a
three-stage algorithm. First, we select the cell-center radius for the 
fractional frequency reuse (FFR) method. Second, we assign the frequency 
resources to satisfy the rate requirements of users and maximize the
objective function. Third, the power allocation subproblem is solved
by using the Levenberg-Marquardt method. Our numerical results show 
that a Pareto-optimal solution exists for EE and SE. We present results
for different rate constraints.

Speaker's Biography:

Ender Ayanoglu received the M.S. and Ph.D. degrees from Stanford 
University, Stanford, CA in 1982 and 1986, respectively, in electrical 
engineering. He was with Bell Laboratories Holmdel, NJ until 1999.
From 1999 until 2002, he was a Systems Architect at Cisco Systems,
Inc., San Jose, CA. Since 2002, he has been a Professor in the
Department of Electrical Engineering and Computer Science, University
of California, Irvine, Irvine, CA, where he served as the Director of
the Center for Pervasive Communications and Computing  and held the
Conexant-Broadcom Endowed Chair during 2002- 2010. From 1993 until
2014 Dr. Ayanoglu was an Editor, and since January 2014 is a Senior
Editor of the IEEE Transactions on Communications. He served as the
Editor-in-Chief of the IEEE Transactions on Communications from 2004
to 2008.  Since 2017, he is serving as the founding Editor-in-Chief
of the IEEE Transactions on Green Communications and Networking. From
1990 to 2002, he served on the Executive Committee of the IEEE 
Communications Society Communication Theory Committee, and from 1999 to 
2001, was its Chair. Dr. Ayanoglu is the recipient of the IEEE 
Communications Society Stephen O. Rice Prize Paper Award in 1995 and
the IEEE Communications Society Best Tutorial Paper Award in 1997.
He has been an IEEE Fellow since 1998.