Precoder Design for Multicast D2D Communications Underlaying Cellular Networks
نویسنده
چکیده
In this paper, we consider multicast device-to-device (D2D) direct communication underlaying cellular network where D2D multicast link reuses uplink frequency resources of cellular communication. We assume that a D2D multicast transmitter is equipped with multiple transmit antennas. Hence, well-known multiple antenna transmission schemes can be used in D2D multicast transmitter to reduce the interference caused by cellular users and to obtain higher data transmission rate. We propose a precoder design method for D2D multicast transmitter to maximize the sum capacity of multicast D2D group and cellular user. Through the simulation results, we show that the sum capacity can be increased by properly selecting the precoding vector in D2D multicast transmitter. We also show that the sum capacity gets higher as the number of receive users in multicast D2D group increases.
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