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View Diary: Check out Palin’s glasses at the debate (w poll) (86 comments)

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  •  Yes - you can hide the signal (4+ / 0-)

    Using Frequency Hopping Spread Spectrum signals Link

    A spread-spectrum transmission offers three main advantages over a fixed-frequency transmission:

      1. Spread-spectrum signals are highly resistant to narrowband interference. The process of re-collecting a spread signal spreads out the interfering signal, causing it to recede into the background.
      2. Spread-spectrum signals are difficult to intercept. An FHSS signal simply appears as an increase in the background noise to a narrowband receiver. An eavesdropper would only be able to intercept the transmission if they knew the pseudorandom sequence.
      3. Spread-spectrum transmissions can share a frequency band with many types of conventional transmissions with minimal interference. The spread-spectrum signals add minimal noise to the narrow-frequency communications, and vice versa. As a result, bandwidth can be utilized more efficiently.

    -6.25 -7.08 The glass is neither half-full nor half-empty. The glass is just twice as large as it needs to be.

    by Unit Zero on Mon Sep 29, 2008 at 03:44:17 PM PDT

    [ Parent ]

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