POWER SPECTRAL DENSITY OF MODIFIED QORC MODULATION PASSED THROUGH A BANDPASS HARD LIMITER.

Iwao Sasase, Shinsaku Mori

Research output: Contribution to journalConference article

Abstract

The power spectral density (PSD) of modified quadrature overlapped raised-cosine (Modified QORC) modulation passed through a bandpass hard limiter is examined by analytical methods. We show that the PSD's of the bandpass hard-limited MQORC at offset D equals 0 and staggered MQORC have significant different behavior, the former tends to its sidelobes restored and approached to those of the hard-limited QORC, whereas the latter tends to keep its sidelobes suppressed as is the case prior to a hard limiter, and therefore, the sidelobes drop off faster compared to the hard-limited staggered QORC. This fact shows that the suppression of the PSD due to the pulse shaping is effective even over the bandpass hard-limited channel in the case of staggered MQORC.

Original languageEnglish
Pages (from-to)230-234
Number of pages5
JournalConference Record - International Conference on Communications
Volume1
Publication statusPublished - 1983 Dec 1

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ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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