VPSK and VMSK modulation transmit digital audio and video at 15 bits/sec/Hz

Author

Walker, H.R.

Author_Institution

Pegasus Data Syst., Middlesex, NJ, USA

Volume

43

Issue

1

fYear

1997

fDate

3/1/1997 12:00:00 AM

Firstpage

96

Lastpage

103

Abstract

Bandwidth efficiencies that have not been possible in the past are now being achieved using variable PSK (VPSK) and variable MSK (VMSK) modulation without the loss of signal power that normally accompanies high bandwidth efficiency methods. Theoretically, these two methods do not lose any signal energy with increasing bandwidth compression. Efficiencies up to 15 bits/sec/Hz are now being achieved in usable hardware with C/N ratios better than that obtainable using FM, BPSK or QPSK. This paper explains how this is accomplished and gives a full mathematical analysis of the method. FM-SCA, VSAT, STL and RPU equipment are now undergoing beta testing prior to FCC Type Acceptance submission. Installation is expected on a large network during 1997

Keywords

bandwidth compression; digital audio broadcasting; minimum shift keying; phase shift keying; visual communication; C/N ratios; FM-SCA equipment; RPU equipment; STL equipment; VMSK; VPSK; VSAT equipment; bandwidth compression; beta testing; carrier/noise ratio; digital audio; digital video; high bandwidth efficiency methods; signal energy; variable MSK; variable PSK; Apertures; Bandwidth; Binary phase shift keying; Digital modulation; FCC; Hardware; Large Hadron Collider; Magnetic force microscopy; Mathematical analysis; Modulation coding; Optical signal processing; Phase shift keying; Quadrature amplitude modulation; Quadrature phase shift keying; Testing;

fLanguage

English

Journal_Title

Broadcasting, IEEE Transactions on

Publisher

ieee

ISSN

0018-9316

Type

jour

DOI

10.1109/11.566830

Filename

566830