  The problem of joint power and sub-channel allocation to maximize energy
efficiency (EE) and spectral efficiency (SE) simultaneously in in-band
full-duplex (IBFD) orthogonal frequency-division multiple access (OFDMA)
network is addressed considering users' QoS in both uplink and downlink. The
resulting optimization problem is a non-convex mixed-integer non-linear program
(MINLP) which is generally difficult to solve. In order to strike a balance
between the EE and SE, we restate this problem as a multi-objective
optimization problem (MOOP) which aims at maximizing system's throughput and
minimizing system's power consumption, simultaneously. To this end, the
\epsilon constraint method is adopted to transform the MOOP into
single-objective optimization problem (SOOP). The underlying problem is solved
via an efficient solution based on the majorization minimization (MM) approach.
Furthermore, in order to handle binary subchannel allocation variable
constraints, a penalty function is introduced. Simulation results unveil
interesting tradeoffs between EE and SE.
