Abstract: This paper shows the optimality of Pulse-Position Modulation (PPM) for covert communications over discrete-memoryless channels. Specifically, the concatenation of a random m-ary outer code ...
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How GPS really works, how satellites calculate your position and why accuracy has limits
In this video, we break down how GPS determines your position using satellite timing, atomic clocks, and distance calculations. We also explore the real world sources of error, from atmospheric ...
Government reporters Meryl Kornfield, Hannah Natanson and Lisa Rein can be reached securely on Signal at (301) 821-2013, (202) 580-5477 and (202) 821-3120, respectively. The Department of Veterans ...
Many find it fun and festive to string outdoor decorative lights, lifting the spirits not only of those who decorate but all passersby. If you want to know what that holiday spirit will add to your ...
Payroll officers handle this automatically, but understanding how to calculate PAYE tax yourself helps you confirm that your deductions are correct. Understanding how to calculate tax on your salary ...
Pulse density modulation (PDM) is a compact digital audio format used in devices like MEMS microphones and embedded systems. This compact primer eases you into the essentials of PDM audio. Let’s begin ...
President Donald Trump's pick for USTR chief ag negotiator, Julie Callahan, before her nomination hearing before the Senate Finance Committee (Agri-Pulse photo) Julie Callahan’s nomination for chief ...
The Danish author Solvej Balle’s experimental opus reframes the tedium of contemporary life as a source of unexpected wonders. Solvej Balle in her garden in Denmark.Credit...Giulia Mangione for The ...
If you have a brain, and if you know others who do, then you know there’s a catastrophic catalogue of ways that our skull-socket electro-fat computers can disappoint their owners. From memory-loss to ...
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