Hacker ethic term "hack" arose from MIT lingo, as the word had long been used to describe college pranks that MIT students would regularly devise. However, Levy's hacker ethic also has often been quoted out of context and misunderstood to refer to hacking as in breaking into computers, and so many sources incorrectly imply that it is describing the ideals of white-hat hackers. However, what Levy is talking about does not necessarily have anything particular to do with computer security, but addresses broader issues. The hacker ethic was described as a "new way of life, with a philosophy, an ethic and a
Cyclic prefix Cyclic prefix In telecommunications, the term cyclic prefix refers to the prefixing of a symbol, with a repetition of the end. The receiver is typically configured to discard the cyclic prefix samples, but the cyclic prefix serves two purposes: For the cyclic prefix to serve its objectives, it must have a length at least equal to the length of the multipath channel. The concept of a cyclic prefix is traditionally associated with OFDM systems, however the cyclic prefix is now also used in single carrier systems to improve the robustness to multipath propagation. A cyclic prefix is often used in