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  2. Code word (communication) - Wikipedia

    en.wikipedia.org/wiki/Code_word_(communication)

    In communication, a code word is an element of a standardized code or protocol. Each code word is assembled in accordance with the specific rules of the code and assigned a unique meaning. Code words are typically used for reasons of reliability, clarity, brevity, or secrecy.

  3. Multiservice tactical brevity code - Wikipedia

    en.wikipedia.org/wiki/Multiservice_tactical...

    Multiservice tactical brevity codes are codes used by various military forces. The codes' procedure words, a type of voice procedure, are designed to convey complex information with a few words.

  4. Reed–Muller code - Wikipedia

    en.wikipedia.org/wiki/Reed–Muller_code

    Reed–Muller codes generalize the Reed–Solomon codes and the Walsh–Hadamard code. Reed–Muller codes are linear block codes that are locally testable, locally decodable, and list decodable. These properties make them particularly useful in the design of probabilistically checkable proofs .

  5. Code word (figure of speech) - Wikipedia

    en.wikipedia.org/wiki/Code_word_(figure_of_speech)

    A code word is a word or a phrase designed to convey a predetermined meaning to an audience who know the phrase, while remaining inconspicuous to the uninitiated.

  6. Rolling code - Wikipedia

    en.wikipedia.org/wiki/Rolling_code

    A rolling code (or sometimes called a hopping code) is used in keyless entry systems to prevent a simple form of replay attack, where an eavesdropper records the transmission and replays it at a later time to cause the receiver to 'unlock'. Such systems are typical in garage door openers and keyless car entry systems.

  7. Shannon–Fano coding - Wikipedia

    en.wikipedia.org/wiki/Shannon–Fano_coding

    In the field of data compression, Shannon–Fano coding, named after Claude Shannon and Robert Fano, is one of two related techniques for constructing a prefix code based on a set of symbols and their probabilities (estimated or measured). Shannon's method chooses a prefix code where a source symbol. i {\displaystyle i}

  8. Generator matrix - Wikipedia

    en.wikipedia.org/wiki/Generator_matrix

    In coding theory, a generator matrix is a matrix whose rows form a basis for a linear code. The codewords are all of the linear combinations of the rows of this matrix, that is, the linear code is the row space of its generator matrix.

  9. Hexspeak - Wikipedia

    en.wikipedia.org/wiki/Hexspeak

    Hexspeak is a novelty form of variant English spelling using the hexadecimal digits. Created by programmers as memorable magic numbers, hexspeak words can serve as a clear and unique identifier with which to mark memory or data. Hexadecimal notation represents numbers using the 16 digits 0123456789ABCDEF. Using only the letters ABCDEF it is ...

  10. Syncword - Wikipedia

    en.wikipedia.org/wiki/Syncword

    The syncword is a known sequence of data used to identify the start of a frame, and is also called reference signal or midamble in wireless communications . Prefix codes allow unambiguous identification of synchronization sequences and may serve as self-synchronizing code .

  11. Space–time block coding based transmit diversity - Wikipedia

    en.wikipedia.org/wiki/Space–time_block_coding...

    Space–time block coding based transmit diversity ( STTD) is a method of transmit diversity used in UMTS third-generation cellular systems. STTD is optional in the UTRAN air interface but mandatory for user equipment ( UE ). STTD utilizes space–time block code (STBC) in order to exploit redundancy in multiple transmitted versions of a signal.