Browse Prior Art Database

SYNCHRONIZATION FOR A SPECTRUM EFFICIENT MODULATED SIGNAL

IP.com Disclosure Number: IPCOM000005829D
Original Publication Date: 1990-Mar-01
Included in the Prior Art Database: 2001-Nov-09

Publishing Venue

Motorola

Related People

Authors:
Michael L. Needham Michael D. Kotzin

Abstract

In aspectrum efficient communication system, it is desirable to utilize modulation techniques that occupy minimum transmitted spectrum. One highly advantageous modulation approach is the frequency division multiplexing of informa- tion onto closely spaced multiple subcarriers. This approach was recently used in a new spectrum efficient communica- tions system developed at Motorola. In this system, digital data and processed speech symbols were encoded together for transmission over a radio channel.