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

被引：31

作者：

Walker, HR

机构：

[1] Pegasus Data Systems, Middlesex, NJ

来源：

IEEE TRANSACTIONS ON BROADCASTING | 1997年 / 43卷 / 01期

关键词：

D O I：

10.1109/11.566830

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Bandwidth efficiencies that have not been possible in the past are now being achieved using VPSK and 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 wit 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. PM-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.

引用

页码：96 / 103

页数：8