Abstract: Sparse code multiple access (SCMA) is a promising non-orthogonal multiple access scheme for enabling massive connectivity in next generation wireless networks. However, current SCMA ...

Practice projectile motion with fully solved physics problem examples. This video walks through step-by-step solutions to help you understand equations, motion components, and problem-solving ...

Abstract: In this paper, we investigate hybrid BDPSK-BPSK modulation, where BDPSK symbols are first demodulated and serve as pilot symbols for BPSK demodulation, over fast fading channels. We try to ...

Wheels have existed for thousands of years, but none were built for space. When NASA began planning missions beyond Earth, engineers quickly realized traditional designs would fail in extreme ...