Telepresence Jamming Frequencies, Preventing Future Time Travelers from Taking Your Memories to Sell In The Future

Imagine the near-far problem applied to an OMNIVALENTentity which can transmit itself through space and time…

“Consider a receiver and two transmitters, one close to the receiver, the other far away. If both transmitters transmit simultaneously and at equal powers, then due to the inverse square law the receiver will receive more power from the nearer transmitter. Since one transmission’s signal is the other’s noise the signal-to-noise ratio (SNR) for the farther transmitter is much lower. This makes the farther transmitter more difficult, if not impossible, to understand. If the nearer transmitter transmits a signal that is orders of magnitude higher than the farther transmitter then the SNR for the farther transmitter may be below detectability and the farther transmitter may just as well not transmit. This effectively jams the communication channel. In short, the near-far problem is one of detecting or filtering out a weaker signal amongst stronger signals.”

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This entry was written by enjoying autumn, posted on January 8, 2009 at 2:13 pm.

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2 Comments

  1. #timboucher #tmbchr @omnivateLLC
    Posted January 8, 2009 at 2:15 pm | Permalink

    http://en.wikipedia.org/wiki/Pseudorandom_noise

    In cryptography, pseudorandom noise (PRN) is a signal similar to noise which satisfies one or more of the standard tests for statistical randomness.

    Although it seems to lack any definite pattern, pseudorandom noise consists of a deterministic sequence of pulses that will repeat itself after its period.

    In cryptographic devices, the pseudorandom noise pattern is determined by a key and the repetition period can be very long, even millions of years.

  2. #timboucher #tmbchr @omnivateLLC
    Posted January 8, 2009 at 2:16 pm | Permalink

    http://en.wikipedia.org/wiki/Spread_spectrum

    Spread-spectrum techniques are methods by which electromagnetic energy generated in a particular bandwidth is deliberately spread in the frequency domain, resulting in a signal with a wider bandwidth. These techniques are used for a variety of reasons, including the establishment of secure communications, increasing resistance to natural interference and jamming, and to prevent detection.

    http://en.wikipedia.org/wiki/Orthogonal_variable_spreading_factor
    http://en.wikipedia.org/wiki/Weak_convergence_of_measures
    http://en.wikipedia.org/wiki/Covariance_matrix

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