  In this letter, we study the transmission of a multi-view video (MVV) to
multiple users in an Orthogonal Frequency Division Multiple Access (OFDMA)
system. To maximally improve transmission efficiency, we exploit both natural
multicast opportunities and view synthesis-enabled multicast opportunities.
First, we establish a communication model for transmission of a MVV to multiple
users in an OFDMA system. Then, we formulate the minimization problem of the
average weighted sum energy consumption for view transmission and synthesis
with respect to view selection and transmission power and subcarrier
allocation. The optimization problem is a challenging mixed discrete-continuous
optimization problem with huge numbers of variables and constraints. A
low-complexity algorithm is proposed to obtain a suboptimal solution. Finally,
numerical results further demonstrate the value of view synthesis-enabled
multicast opportunities for MVV transmission in OFDMA systems.
