科研之友
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摘要
Constant amplitude zero autocorrelation (CAZAC) sequences are increasingly used in new communication systems (e.g. LTE, WiMax). The (unique) Bjorck sequence whose length P is an odd prime is a less known CAZAC sequence. By modifying the Bjorck sequence through CAZAC transformations, a Bjorck set of P orthogonal sequences is introduced. The maximum absolute set cross-correlation is near 2/root P and the root-meansquare (RMS) of the cross-correlation function is 1/root P. A Bjorck set is contrasted with the widely used Zadoff-Chu set, which contains P - 1 non-orthogonal sequences. The introduction of Bjorck sets gives a system designer more flexibility in sequence selection.
- 出版日期2011-4-14
