学術雑誌論文 Weighing matrices and spherical codes

Nozaki, Hiroshi  ,  Suda, Sho

42 ( 1 )  , pp.283 - 291 , 2015-08 , Springer
ISSN:0925-9899
NII書誌ID(NCID):AA10868319
内容記述
Mutually unbiased weighing matrices (MUWM) are closely related to an antipodal spherical code with 4 angles. In this paper, we clarify the relation between MUWM and the spherical codes, and determine the maximum size of a set of MUWM with weight 4 for any order. Moreover, we define mutually quasi-unbiased weighing matrices (MQUWM) as a natural generalization of MUWM from the viewpoint of spherical codes. We determine the maximum size of a set of MQUWM for the parameters (d, 2, 4, 1) and (d, d, d/2, 2d). This includes an affirmative answer to the problem of Best, Kharaghani, and Ramp.
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http://repository.aichi-edu.ac.jp/dspace/bitstream/10424/6739/1/sudas002.pdf

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