Document Type



Master of Science (MS)


Electrical Engineering

First Advisor's Name

Ismail Guvenc

First Advisor's Committee Title

Committee Chair

Second Advisor's Name

Shaolei Ren

Second Advisor's Committee Title

Committee Member

Third Advisor's Name

Neiyer Correal

Third Advisor's Committee Title

Committee Member

Fourth Advisor's Name

Nezih Pala

Fourth Advisor's Committee Title

Committee Member


D2D communications, HetNets, Public Safety, LTE, System Level Simulations, Partial Coverage

Date of Defense



In this thesis, we proposed the use of device-to-device (D2D) communications for extending the coverage area of active base stations, for public safety communications with partial coverage. A 3GPP standard compliant D2D system level simulator is developed for HetNets and public safety scenarios and used to evaluate the performance of D2D discovery and communications underlying cellular networks. For D2D discovery, the benefits of time-domain inter-cell interference coordi- nation (ICIC) approaches by using almost blank subframes were evaluated. Also, the use of multi-hop is proposed to improve, even further, the performance of the D2D discovery process. Finally, the possibility of using multi-hop D2D communications for extending the coverage area of active base stations was evaluated. Improvements in energy and spectral efficiency, when compared with the case of direct UE-eNB communi- cations, were demonstrated. Moreover, UE power control techniques were applied to reduce the effects of interference from neighboring D2D links.


FI15032110 (6889 kB)
Latex Files



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