Abstract: To address the problem of high complexity of channel estimation for orthogonal time frequency space (OTFS) systems, we propose a low complexity channel estimation method leveraging the ...

The ideal booking window for domestic flights is approximately one to two months prior to takeoff. You should plan much earlier for overseas travel to secure the most favorable rates. Flying earlier ...

Astronauts Tom Stafford (left) and Wally Schirra (right) demonstrating with two model space crafts during an interview in the 1960s Donald Uhrbrock / Getty Images On December 15, 1965, NASA’s mission ...

Our favorite titles of the year resurrect overlooked histories and examine how the United States ended up where it is today Science From “experimental archaeology” to the mysterious appeal of ...

Abstract: Application of ridge detection algorithms to various transforms and problems in time-frequency (TF) analysis has become increasingly widespread with notable application in the instantaneous ...

• US and elsewhere: Watch on Disney Plus in 2026 (date TBC) • Away from home: Use a VPN such as NordVPN to watch your usual service from anywhere "The War Between the Land and the Sea" is the latest ...

Weather permitting, SpaceX Falcon 9 may be visible in the sky beyond Cape Canaveral, Florida, after liftoff. Early morning and nighttime launches can offer unique photo opportunities as the rocket ...

As reading declines, fragments of the literary past float to the cultural surface like corpses after a shipwreck. Complex thought survives in a motto: “The past is never dead. It’s not even past.” ...