Walsh code

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The Walsh code is a mathematical term used to encode channels in various communication technologies . Walsh codes are orthogonal codes . If several signals are encrypted and overlaid with different Walsh codes, a specific signal can be recovered by correlating with the corresponding code. This is used, for example, in the code division multiplexing method in mobile communication (see spreading codes ).

The Walsh codes can be calculated with the help of Walsh functions .

literature

Martin Bossert: Channel Coding. 3rd revised edition, Oldenbourg Verlag, Munich 2013, ISBN 978-3-486-72128-7 .

Web links

Walsh Codes, PN Sequences and their role in CDMA Technology (accessed July 27, 2018)
LOCAL DECODING OF WALSH CODES TO REDUCE CDMA DESPREADING COMPUTATION (accessed July 27, 2018)
Walsh-Hadamard code (accessed July 27, 2018)