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.

中文翻译：

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OFDMA 系统中的最佳多视图视频传输

在这封信中，我们研究了在正交频分多址 (OFDMA) 系统中向多个用户传输多视图视频 (MVV)。为了最大限度地提高传输效率，我们利用自然多播机会和视图合成启用多播机会。首先，我们建立了一个用于在OFDMA系统中向多个用户传输MVV的通信模型。然后，我们针对视图选择和传输功率以及子载波分配，制定了视图传输和合成的平均加权和能量消耗的最小化问题。优化问题是具有大量变量和约束的具有挑战性的混合离散-连续优化问题。提出了一种低复杂度的算法来获得次优解。最后，