… of D2D communications into cellular … spectrum reuse and limited battery life of user equipments
(UEs). A large number of works have been done in how to optimize the spectral efficiency …

… usage, energy efficiency, and overall … the D2D communication system involve spectrum
efficiency and interference. Although many studies have been conducted on spectrum efficiency …

… services and applications, mobile device-to-device (D2D) … of underlaying mobile D2D
communication systems with … and investigate the energy efficiency (EE) and spectral efficiency …

… between energy efficiency (EE) and spectrum efficiency (SE) … -to-device (D2D) communication
pairs during the uplink … control problem for cellular and D2D users. The original problem is …

… In this paper, we investigate a scenario of multihop D2D communications where one UE …
the average energy efficiency and spectral efficiency of multihop D2D communications under …

… can achieve the same or better spectral efficiency as the FDD implementation while having
… Further to analyzing the spectral efficiency, we also analyze the outage performance of the …

… to improve the spectral and energy efficiencies of cellular … address either spectral efficiency
(SE) or energy efficiency (… cell D2D integrated cellular network, where multiple D2D multicast …

… efficiency of HD D2D links between the UEs in [12, 13]. In this paper we aim to consider the
potential of FD D2D communications to improve spectral efficiency … FD D2D communications …

… in this paper to increase both the spectral efficiency and the energy efficiency of a whole
network. MmWave systems. Although biological safety [13] and channel behavior [14], [15] of …

… the spectral efficiency (SE) and energy efficiency (EE) in such networks. Thus, the exact
expressions of SE for a cellular user or D2D … MIMO antennas and D2D density. Moreover, the …