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Some Constructions of Almost-Perfect, Odd-Perfect and Perfect Polyphase and Almost-Polyphase Sequences

  • Evgeny I. Krengel
Part of the Lecture Notes in Computer Science book series (LNCS, volume 6338)

Abstract

In the paper, some new almost-perfect (AP), odd-perfect (OP) and perfect polyphase and almost-polyphase sequences derived from the Frank and Milewski sequences are presented. The considered almost-polyphase sequences are polyphase sequences with some zero elements. In particular, we constructed AP 2 t + 1- and 2 t + 2-phase sequences of length 2·4 t and 4 t + 1, OP 2 t + 1- and 2 t + 2-phase sequences of length 4 t and 2·4 t , OP 2 t + 1- and 2 t + 2 - phase sequences of length 4 t (p m  + 1), \((p^m-1)\equiv 0 \pmod {2\cdot 4^t}\) with 4 t zeroes and length 2·4 t (p m  + 1), \((p^m-1) \equiv 0 \pmod {4^{t+1}}\) with 2·4 t zeroes, and perfect 2 t + 1- and 2 t + 2 - phase sequences of length 4 t + 1(p m  + 1) with 4 t + 1 zeroes and 2·4 t + 1(p m  + 1) with 2·4 t + 1 zeroes. It is shown that the phase alphabet size of the obtained OP and perfect almost-polyphase sequences is much smaller in comparison with the known OP and perfect polyphase sequences of the same length and the alphabet size of some new OP polyphase sequences is minimum.

Keywords

Cyclic Shift Alphabet Size Perfect Sequence Shift Sequence Autocorrelation Property 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2010

Authors and Affiliations

  • Evgeny I. Krengel
    • 1
  1. 1.Kedah Electronics EngineeringRussia

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