Abstract: In this letter, we design a bit-interleaved polar-coded modulation system with iterative decoding subject to constraints on complexity, error floor, and ...

The world’s polar bear population is projected to decline by two-thirds by 2050. A new study from the University of East Anglia suggests that polar bears are undergoing rapid genetic changes, and ...

Millions have seen the heart-wrenching video of a polar bear clinging to life, its white hair limply covering its thin, bony frame. Shot by Paul Nicklen and Cristina Mittermeier of the nonprofit group ...

Abstract: Common-emitter operation was demonstrated in an N-polar tunneling hot electron transistor. Under collector-emitter bias of 7 V, small signal current gain ~1.3, and voltage gain ~4 were ...

As announced earlier this year, the Polar Express will run from London Euston this Christmas, and it has now arrived at the station ahead of its first outing tomorrow. This is the second time that the ...