Spherical harmonics representations are widely adopted in applications such as analysis, manipulation, and synthesis of wave fields that either captured or simulated. Recent studies have shown that, for broadband fields, a time domain representation spherical expansions can benefit from computational efficiency favorable transient properties. For practical usage, an accurate discrete-time model...

The optimal sampling problem is the selection of instants together with control actions such that a given cost function minimized. In this article, we solve for free final time linear quadratic regulator. Each instant computed as minimization maximum eigenvalue formulated at each stage by previously applying dynamic programming. solution provides instants, actions, and in recursive constructive...

LoRaWAN is nowadays one of the most popular protocols for low-power Internet Things communications. Although its physical layer, namely LoRa, has been thoroughly studied in literature, aspects related to synchronization LoRa receivers have received little attention so far. The estimation and correction carrier frequency sampling time offsets (STOs) are, however, crucial attain low sensitivity l...