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IEICE TRANSACTIONS on Fundamentals

M-Ary Orthogonal Keying under Carrier Frequency Offset

Nozomu NISHINAGA, Yoshihiro IWADARE

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Summary :

M-ary orthogonal keying (MOK) systems under carrier frequency offset (CFO) are investigated. It is shown that spurious signals are introduced by the offset frequency components of spectrum after multiplication in correlation detection process, and some conditions on robust orthogonal signal sets are derived. Walsh function sets are found to be very weak against CFO, since they produce large spurious signals. As robust orthogonal signal sets against CFO, the rows of circulant Hadamard matrices are proposed and their error performanses are evaluated. The results show that they are good M-ary orthogonal signal sets in the presence of CFO.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E79-A No.9 pp.1408-1414
Publication Date
1996/09/25
Publicized
Online ISSN
DOI
Type of Manuscript
Special Section PAPER (Special Section on Information Theory and Its Applications)
Category
Communication/Spread Spectrum

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