PERFORMANCE COMPARISON OF HIGH LEVEL QAM & QPRS SCHEMES IN NONLINEAR RADIO CHANNELS.

K. Sreenath, Iwao Sasase, Kamilo Feher

Research output: Contribution to journalConference articlepeer-review

Abstract

The sensitivity of high-level modulation schemes to channel nonlinearities in digital radio systems is investigated. The QAM schemes are less sensitive to nonlinearities when operated in the offset mode. Comparison of QAM and QPRS schemes reveals that the latter need a lower carrier to noise ratio (CNR) than corresponding QAM schemes for identical operating conditions. When the nonlinearities are not severe, the degradation in performance is controlled by AM/PM characteristic of the amplifier.

Original languageEnglish
Pages (from-to)1632-1635
Number of pages4
JournalConference Record - International Conference on Communications
Publication statusPublished - 1986 Dec 1
Externally publishedYes

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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