pseudorandom code
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Pseudorandom noise — In cryptography, pseudorandom noise (PRN[1][2]) 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… … Wikipedia
Pseudorandom encoder — A pseudorandom encoder is an electro mechanical device used for measuring distance and finding position. It is different from the conventional absolute and incremental encoder in its disk pattern, which gives it aspects of the other two… … Wikipedia
Code division multiple access — This article is about a channel access method. For the mobile phone technology referred to as CDMA, see IS 95 and CDMA2000. Multiplex techniques Circuit mode (constant bandwidth) TDM · FDM … Wikipedia
Pseudorandom binary sequence — A binary sequence (BS) is a sequence of N bits, :a j for j=0,1,...,N 1, i.e. m ones and N m zeros. A BS is pseudo random (PRBS) if its autocorrelation function :C(v)=sum {j=0}^{N 1} a ja {j+v}has only two values::C(v)=egin{cases}m, mbox{ if }… … Wikipedia
Code pseudo-aléatoire — Générateur de nombres pseudo aléatoires Un générateur de nombres pseudo aléatoires, pseudorandom number generator (PRNG) en anglais, est un algorithme qui génère une séquence de nombres présentant certaines propriétés du hasard. Par exemple, les… … Wikipédia en Français
Cryptographically secure pseudorandom number generator — A cryptographically secure pseudo random number generator (CSPRNG) is a pseudo random number generator (PRNG) with properties that make it suitable for use in cryptography. Many aspects of cryptography require random numbers, for example: Key… … Wikipedia
LT code — In computer science, LT codes (Luby Transform codes) are the first class of practical fountain codes that are near optimal erasure correcting codes invented by Michael Luby in 1998 and published in 2002. [http://ieeexplore.ieee.org/xpl/freeabs… … Wikipedia
Multi-carrier code division multiple access — (MC CDMA) is a multiple access scheme used in OFDM based telecommunication systems, allowing the system to support multiple users at the same time. MC CDMA spreads each user symbol in the frequency domain. That is, each user symbol is carried… … Wikipedia
Barker code — A Barker code is a sequence of N values of +1 and −1,:a j for j = 1, cdotcdotcdot, Nsuch that:|sum {j=1}^{N v} a j a {j+v}| le 1,for all 1 le v < N.Here is a table of all known Barker codes, where negations and reversals of the codes have been… … Wikipedia
Comparison of mobile phone standards — A comparison of mobile phone standards can be done in many ways. Contents 1 Issues 2 Comparison table 3 Traceability comparison 4 Strengths and Weaknesses of IS 95 and GSM[4] … Wikipedia
Time-hopping — in communications, a type of spread spectrum technology in which the carrier is turned on and off by the pseudorandom code sequence. See Also *Spread Spectrum *Frequency Hopping spread spectrum *Direct sequence spread spectrum External Links… … Wikipedia
