Universality of Pseudorandom series

In summary, the conversation discussed the use of pseudorandom series, such as Gold codes and Voyger randing codes, for communication. It was mentioned that these codes can be used with other number systems and potentially throughout the universe. However, due to the long time it takes for light speed communication, these codes may result in very narrow bandwidth and long message transmission times. The conversation also touched on the concept of spread spectrum and how longer code sequences can improve signal to noise ratio. The use of long code sequences, such as the one used in the Voyeur project, was also mentioned as a way to achieve higher resolution. Finally, it was noted that SETI may use spread spectrum, but would require synchronization and patience to recognize long code
  • #1
dougfgd
22
0
I was involved with pseudorandom series for communications.
For example Gold codes and Voyger randing codes. Do these codes apply with other number systems and hence throughout the universe.
Light speed communication will take years hence codes could be very long, giving very narrow bandwidth and good signal to noise, message may take years to say hello but nice to hear anyway.
Doug
 
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  • #2
Why do you want to use pseudorandom numbers for communication, especially if the receiver does not know what you send? Why not just send the bits you want to transmit?

What is a "Voyger randing code"? Google gives this thread as top result.
 
  • #3
This is spread spectrum ; because of correlation the longer the code sequence the narrower the bandwidth and better the signal to noise, I think a short gold code sequence is used for synchronization on your mobile phone. Think of 1024 bit sequence as 1 bit with error correction.
A long sequence was devised for Voyeur , long enough to think of it as a measure tape with no ambiguity over light hours hence high resolution..
SETI allows for spread spectrum (somewhat) but would not recognize long sequences without synchronization and patience of years?
 

Related to Universality of Pseudorandom series

What is the concept of universality in pseudorandom series?

The concept of universality in pseudorandom series refers to the property of a series of numbers that appear to be random, but are actually generated by a deterministic algorithm. This means that while the numbers may appear to be random, they can be reproduced and predicted by the algorithm that generated them.

How is universality of pseudorandom series relevant in science?

Universality of pseudorandom series is relevant in science because it allows for the creation of random numbers that can be used in various scientific experiments and simulations. It also has applications in cryptography, where random numbers are needed for secure communication and data encryption.

What are some examples of pseudorandom series?

Some examples of pseudorandom series include linear congruential generators, which use modular arithmetic to generate a sequence of numbers, and the Mersenne Twister algorithm, which is commonly used in computer simulations and games. Other examples include the Blum Blum Shub algorithm and the XORshift algorithm.

What are the limitations of pseudorandom series?

One limitation of pseudorandom series is that they are not truly random, as they are generated by algorithms and therefore can be predicted and reproduced. Another limitation is that the quality of the generated numbers may vary depending on the algorithm used, and some algorithms may exhibit patterns or biases that can affect the randomness of the series.

How can the universality of pseudorandom series be tested?

The universality of pseudorandom series can be tested by using statistical tests to analyze the randomness of the generated numbers. These tests can include measures such as frequency tests, runs tests, and autocorrelation tests. If the generated numbers pass these tests and exhibit properties of randomness, then they can be considered to be universal.

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