SYNCHRONIZATION FOR A SPECTRUM EFFICIENT MODULATED SIGNAL
Original Publication Date: 1990-Mar-01
Included in the Prior Art Database: 2001-Nov-09
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.