© The Institution of Electrical Engineers
The paper presents a method of analysing the performance of a bandlimited 16-ary quadrature amplitude modulation(QAM) signal transmitted through a bandpass nonlinearity (BPNL), exhibiting AM-AM and AM-PM conversions, and in the presence of additive Gaussian noise (AGN) both preceding and following the BPNL. To illustrate the validity and usefulness of the technique, the symbol probability of a bandlimited 16-ary QAM signal transmitted through a typical nonlinear satellite channel is derived and computed for a four-pole Bitterworth filter as a function of various levels of the on-board travelling-wave tube (TWT) back-off from saturation and BT products. Finally, as an example, a study of the effect of increased bandlimiting on the system degradation for this communications system model is undertaken.
References
-
-
1)
-
Aghvami, A.H.: `Performance analysis of ', 1981, Ph.D. thesis, University of London.
-
2)
-
E.Y. Ho ,
Y.S. Yeh
.
Error probability of a multilevel digital system with intersymbol interference and Gaussian noise.
Bell Syst. Tech. J.
,
1017 -
1023
-
3)
-
N. Ekanayake
.
MSK and offset QPSK signal transmissions through nonlinear satellite channels in the presence of intersymbol interference.
IEE Proc. F, Commun., Radar & Signal Process.
,
6 ,
513 -
518
-
4)
-
N. Ekanayake ,
D.P. Taylor
.
CPSK signalling over bandlimited channels in additive Gaussian noise and intersymbol interference.
IEEE Trans.
,
62 -
68
-
5)
-
A.H. Aghvami
.
Performance analysis of 16-ary QAM signalling through two-link nonlinear channels in additive Gaussian noise.
IEE Proc.F, Commun., Radar & Signal Process.
,
4 ,
403 -
406
-
6)
-
C.H. Thomas ,
M.Y. Weidmer ,
S.H. Durrani
.
Digital amplitude-phase keying with M-ary alphabets.
IEEE Trans.
,
168 -
180
-
7)
-
P. Dupuis ,
M. Joindot ,
A. Lectert ,
D. Soufflet
.
16 QAM modulation for high capacity digital radio system.
IEEE Trans.
,
1771 -
1781
http://iet.metastore.ingenta.com/content/journals/10.1049/ip-f-1.1986.0040
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