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  2. Spread spectrum - Wikipedia

    en.wikipedia.org/wiki/Spread_spectrum

    Moreover, for a given noise power spectral density (PSD), spread-spectrum systems require the same amount of energy per bit before spreading as narrowband systems and therefore the same amount of power if the bitrate before spreading is the same, but since the signal power is spread over a large bandwidth, the signal PSD is much lower — often ...

  3. Arthur Wynne - Wikipedia

    en.wikipedia.org/wiki/Arthur_Wynne

    Wynne created the page of puzzles for the "Fun" section of the Sunday edition of the New York World. For the December 21, 1913, edition, he introduced a puzzle with a diamond shape and a hollow center, with the letters F-U-N already being filled in. He called it a "Word-Cross Puzzle." [6]

  4. Mortimer Rogoff - Wikipedia

    en.wikipedia.org/wiki/Mortimer_Rogoff

    Mortimer Alan Rogoff (May 2, 1921 – August 1, 2008) was an American inventor, businessman, and author as well as an amateur photographer and radio operator. He is recognized for his work in spread spectrum technology which is the technology that modern cell phones and GPS systems are based on. He is also considered the grandfather of the ...

  5. Off the Grid: Sally breaks down USA TODAY's daily crossword ...

    www.aol.com/off-grid-sally-breaks-down-060020636...

    Explore daily insights on the USA TODAY crossword puzzle by Sally Hoelscher. Uncover expert takes and answers in our crossword blog.

  6. Crossword - Wikipedia

    en.wikipedia.org/wiki/Crossword

    A crossword (or crossword puzzle) is a word game consisting of a grid of black and white squares, into which solvers enter words or phrases ("entries") crossing each other horizontally ("across") and vertically ("down") according to a set of clues. Each white square is typically filled with one letter, while the black squares are used to ...

  7. Wordplay (film) - Wikipedia

    en.wikipedia.org/wiki/Wordplay_(film)

    Wordplay is a 2006 documentary film directed by Patrick Creadon. It features Will Shortz , the editor of the New York Times crossword puzzle , crossword constructor Merl Reagle , and many other noted crossword solvers and constructors.

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  9. Frequency-hopping spread spectrum - Wikipedia

    en.wikipedia.org/wiki/Frequency-hopping_spread...

    In the US, FCC part 15 on unlicensed spread spectrum systems in the 902–928 MHz and 2.4 GHz bands permits more power than is allowed for non-spread-spectrum systems. Both FHSS and direct-sequence spread-spectrum (DSSS) systems can transmit at 1 watt, a thousandfold increase from the 1 milliwatt limit on non-spread-spectrum systems.

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