codeword


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codeword

(ˈkəʊdˌwɜːd)
n
(Communications & Information) (esp in military use) a word used to identify a classified plan, operation, etc. Also: codename
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
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THE infamous IRA Double X codeword used on the night of the Birmingham pub bombings was a closelyguarded secret known to only a few, including former IRA member Martin McGuinness.
If an IRA codeword had been passed on to police officers sent to investigate a bomb threat to the Rotunda, an immediate evacuation of the building and the surrounding area would have been attempted, an inquest jury heard.
Mr Thomas said the codeword used in the warning call to the Birmingham Post & Mail was 'Double X' - which had also been used when the Rotunda was targeted in a previous bomb attack on July 14, 1974.
The specification allows NEMs to optionally use a shortened codeword FEC variant -- RS (272, 257+1, 7, 10) that replaces the IEEE 802.3cd and 802.3bs standard FEC.
A (J, K) LDPC code having code rate 1/2 is employed here, where K refers to the length of the information vector and J is the length of the LDPC codeword. The cooperative communication process can be analysed in two phases.
The eight consecutive bits of QR code message constitute a codeword, each of which will be the coefficients of the message polynomial in Reed-Solomon code encoding, and the corresponding error correction codewords will be generated.
Andrea Martland was only rescued from thuggish Kevin Moran when her brother phoned, suspecting she was in trouble, and told her to say the codeword, "Dad", if she needed help.
In their method, the encryption process could be classified into two types: one was that the most well-known chaotic function and static-tree were employed in the permutation and codeword substitution processes, respectively.
26= O, 25= Y, 24= K, 23= E, 22= J, 21= B, 20= X, 19= L, 18= Z, 17= H, 16= F, 15= A, 14= R, 13= D, 12= C, 11= S, 10= W, 9= V, 8= G, 7= I, 6= P, 5= U, 4= N, 3= Q, 2= T, 1= Codeword: Kissinger.
MLD is based on a number of parity check equations which are orthogonal to each other, so that, at each iteration, each codeword bit only participates in one parity check equation, except the very first bit which contributes to all equations.