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In this paper we investigate the use of energy storage units (ESUs) to reduce the average cost of power supply. Using a dynamic programming (DP) argument, we first show that the optimal control policy for a single-battery ESU, under piecewise linear cost functions, has a threshold structure that can be expressed and stored in a very compact form. We then extend the analysis to an ESU with multiple...
Orthogonal Frequency Division Multiplexing (OFDM) systems guarantee transmissions free from intersymbol interference (ISI) and interchannel interference (ICI) over frequency selective channels, provided that the channel delay spread is less than the duration of the cyclic-prefix (or the zero-padding guard interval). However, it is realistic to consider practical implementation scenarios in which the...
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