Abstract: In massive multiple-input multiple-output (MIMO) systems utilizing the frequency-division duplex (FDD), conventional methods for acquiring downlink channel state information (CSI) lead to ...
Abstract: The aerial manipulator, composed of a multirotor and a robotic arm, could provide extra active operation capability and has the potential for applications in both military and civilian ...
The longest government shutdown in U.S. history is officially over after President Trump signed a bill passed by Congress on Wednesday night. The federal government is reopening. But after 43 days on ...
Welcome to CalMatters, the only nonprofit newsroom devoted solely to covering issues that affect all Californians. Sign up for WhatMatters to receive the latest news and commentary on the most ...
The Senate moves to end the U.S. government shutdown after a group of Democrats join the Republicans to vote in favor of an agreement. Photo: Anna Rose Layden/Getty Images WASHINGTON—The Senate late ...
“This is frustrating. We don’t need to be in this position. We’ve got to get the government back open so we don’t have to cancel flights,” Isom said. The Federal Aviation Administration ordered ...
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