cfaed Seminar Series
Full-Duplex device-to-device communications under-laying cellular communication
08.05.2018 (Tuesday) FAL 07/08 , Chemnitzer Straße 50 , 01187 Dresden
With the rapidly growing of the customers data traffic demand, improving the system capacity and increasing the user throughput have become essential concerns for the future wireless communication network, i.e.,5G. In this context, D2D communication and FD are proposed as potential so-lutions to increase the spatial spectrum utilization and the user rate in a cellular network. D2D allows two nearby devices to communicate without base station participation or with a limited participation. On the other hand, FD communication allows simultaneous transmission and reception in the same frequency band. Due to the short distance property of D2D links, exploiting the FD technology in D2D communication is an excellent choice to further improve the cellular spectrum efficiency and the users’ throughput. However, the practical full-duplex transceivers add new chal-lenges for the D2D communication. For instance, the existing FD devices cannot perfectly eliminate the self-interference (SI) imposed on the recei-ver by the node’s own transmitter. Thus, the residual SI which is tightly related to the transmitter power value highly affects the performance of FD transmission. Moreover, the FD technique creates additional interference in the network which may degrade its performance when compared with the half duplex (HD) transmission.
In this talk, first, we will address the optimal power allocation strategy and the optimal mode selection for a single FD-D2D pair which is reusing the uplink resources of one cellular user. Then, we present a framework of resource allocation for FD-D2D communication underlaying cellular net-works to maximize the overall network’s throughput while guaranteeing the quality of service (QoS) requirements for both D2D and cellular users.