Quasi-cyclic codes over Z4 and some new binary codes
Quasi-cyclic codes over Z4 and some new binary codes
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DOI:
10.1109/tit.2002.1013145
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发表时间:
2002-07-01
影响因子:
2.5
通讯作者:
Ray-Chaudhuri, DK
中科院分区:
文献类型:
--
作者:
Aydin, N;Ray-Chaudhuri, DK
Recently, (linear) codes over 24 and quasi-cyclic (QC) codes (over fields) have been shown to yield useful results in coding theory. Combining these two ideas we study Z(4)-QC codes and obtain new binary codes using the usual Gray map. Among the new codes, the lift of the famous Golay code to Z(4) produces a new binary code, a (92, 2(24), 28)-code, which is the best among all binary codes (linear or nonlinear). Moreover, we characterize cyclic codes corresponding to free modules in terms of their generator polynomials.