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

K. Sreenath; Iwao Sasase; Kamilo Feher

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

K. Sreenath, Iwao Sasase, Kamilo Feher

Research output: Contribution to journal › Conference article › peer-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 language	English
Pages (from-to)	1632-1635
Number of pages	4
Journal	Conference Record - International Conference on Communications
Publication status	Published - 1986 Dec 1
Externally published	Yes

ASJC Scopus subject areas

Computer Networks and Communications
Electrical and Electronic Engineering

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title = "PERFORMANCE COMPARISON OF HIGH LEVEL QAM & QPRS SCHEMES IN NONLINEAR RADIO CHANNELS.",

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.",

author = "K. Sreenath and Iwao Sasase and Kamilo Feher",

year = "1986",

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AU - Sasase, Iwao

AU - Feher, Kamilo

PY - 1986/12/1

Y1 - 1986/12/1

N2 - 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.

AB - 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.

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