Rohan Grover

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In this paper, we propose an optimal strategy for the transmission of scalable video over packet-based multiple-input multiple-output (MIMO) systems. The scalable extension of H.264/AVC that provides a combined temporal, quality and spatial scalability is used. For given channel conditions, we develop a method for the estimation of the distortion of the(More)
—An 8 × 8 two-symbol decodable quasi-orthogonal space-time block code (QO-STBC) is presented which can be transmitted across either 8 or 4 antennas with full rate and the same full diversity order. For the 8-transmit-antenna system, a new expression is developed to identify rotation angles that maximize the diversity (eigenvalue) product. In addition, it is(More)
— Recent advances in the area of binary sequences for code-division multiplexing provide us with minimum total-squared-correlation (TSC) optimal signature sets for (almost) all signature lengths L and set sizes K. The sets are scalable as long as K ≤ L (underloaded systems) and non-scalable-in general require signature re-design/re-assignment as users enter(More)
—We present a new 4 × 4 Hadamard-precoded Quasi-Orthogonal Space-Time Block Code (QO-STBC) that enables reliability-based prioritized symbol detection using linear filters. Approximate block-error-rate analysis is carried out and used to optimize the code rotation angles. For benchmarking purposes, the maximum-likelihood (ML) code detector is also derived(More)