Splatterless Transmitter Disable Switching
Original Publication Date: 1989-Feb-01
Included in the Prior Art Database: 2005-Jan-27
This article describes a transmitter switching mechanism which avoids the formation of spectrum splatter. The broadband local area network (LAN) that employs a radio frequency (RF) transmission technique that modulates data in the form of packets onto a RF carrier. The RF modulated data is then transmitted through a CATV type of cable system to establish a two-way path. The modem on the LAN has both a modulator and demodulator (transmitter and a receiver). The control lines that interface the modem to the communication controller are the transmitter data line (TXD), the request to send line (RTS), the receive data line (RXD) and the data carrier detect line (DCD). The modulation technique chosen to describe the switching mechanism is frequency shift keying (FSK).