An important concept in wireless systems has been quality of experience(QoE)-aware video transmission. Such communications are considered not onlyconnection-based communications but also content-aware communications, sincethe video quality is closely related to the content itself. It becomesnecessary therefore for video communications to utilize a cross-layer design(also known as joint source and channel coding). To provide efficient methodsof allocating network resources, the wireless network uses its cross-layerknowledge to perform unequal error protection (UEP) solutions. In this article,we summarize the latest video transmission technologies that are based onscalable video coding (SVC) over multiple-input multiple-output (MIMO) systemswith cross-layer designs. To provide insight into video transmission inwireless networks, we investigate UEP solutions in the delivering of video overmassive MIMO systems. Our results show that in terms of quality of experience(QoE), SVC layer prioritization, which was considered important in the priorwork, is not always beneficial in massive MIMO systems; consideration must begiven to the content characteristics.
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