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In this paper, the authors propose novel algorithms for optimal power allocation towards video transmission in Orthogonal Frequency Division Multiple Access (OFDMA) and Multiple-Input Multiple-Output (MIMO)-based 4G networks. A unique feature of the schemes is that they employ diversity dependent subcarrier power distribution relying on a Discrete Wavelet Transform (DWT)-based hierarchical video decomposition, with exclusively order statistics-based partial Channel State Information (CSI). This is formulated as a convex minimisation problem and closed form expressions are derived for diversity-based optimal power allocation. They also propose novel algorithms for diversity order-based optimal power allocation for video transmission in MIMO systems.
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