A CODED VSB-QPSK TRANSMISSION SCHEME FOR DIGITAL SATELLITE-COMMUNICATIONS IN COCHANNNEL INTERFERENCE ENVIRONMENTS

Authors
SUGIYAMA T KUBOTA S MORIKURA M KATO S
Citation
T. Sugiyama et al., A CODED VSB-QPSK TRANSMISSION SCHEME FOR DIGITAL SATELLITE-COMMUNICATIONS IN COCHANNNEL INTERFERENCE ENVIRONMENTS, IEEE transactions on aerospace and electronic systems, 32(3), 1996, pp. 1174-1181
Citations number
17
Categorie Soggetti
Telecommunications,"Engineering, Eletrical & Electronic","Aerospace Engineering & Tecnology
Journal title
IEEE transactions on aerospace and electronic systems → ACNP
ISSN journal
00189251
Volume
32
Issue
3
Year of publication
1996
Pages
1174 - 1181
Database
ISI
SICI code
0018-9251(1996)32:3<1174:ACVTSF>2.0.ZU;2-X
Abstract
A coded VSB (vestigial side band)-QPSK (quadrature phase-shift keying) transmission scheme is proposed to realize interference-resistant dig ital satellite communication systems. It uses an interference suppress ion filter to suppress the interference power in the receiving side. T he suppressed power can be assigned to the transmission signals in adv ance by also using a same characteristic band limitation filter in the transmission side. Moreover, high coding-gain forward error correctio n (FEC) is employed to improve the degradation due to I and Q channel crosstalk by interference suppression. When a D/U (desired and undesir ed signal power ratio) equals 3 dB and a Delta f/f(N) (Delta f: interf erence frequency offset, f(N): one-half the Nyquist bandwidth) equals 1.05, the proposed scheme achieves an Eb/Mo improvement of 7.3 dB in a CCI (co-channel interference) environment.