NRL’s Chesapeake Bay lasercom test facility (LCTF) offers a variety of ranges for researching free-space optical laser communication (FSO lasercom) links in a maritime environment. This paper discusses link performance over the 16 km one-way range at the LCTF. There are several methods to determine the link quality in FSO lasercom. Bit-error-rate (BER) testing and packet testing are two possibl...

We propose a protocol for secure communication between two parties who know each other well using only the entropy from their shared life experience. This could enable, for example, lovers or close friends to communicate over a one-way channel without prior key exchange. Our system uses a flexible secret-sharing mechanism to accommodate pieces of personal knowledge of variable entropy and memor...

We propose a protocol for secure communication between two parties who know each other well using only the entropy from their shared life experience. This could enable, for example, lovers or close friends to communicate over a one-way channel without prior key exchange. Our system uses a flexible secret-sharing mechanism to accommodate pieces of personal knowledge of variable entropy and memor...

We study the problem of computing approximate Nash equilibria of bimatrix games, in a setting where players initially know their own payoffs but not the payoffs of the other player. In order for a solution of reasonable quality to be found, some amount of communication needs to take place between the players. We are interested in algorithms where the communication is substantially less than the...

This paper is concerned with the relay and jammers selection in two-way cooperative networks to improve their physical layer security. Three different categories of selection schemes are proposed which are; selection schemes without jamming, selection schemes with conventional jamming and selection schemes with controlled jamming. The selection process is analyzed for two different network mode...