Archive for January 30th, 2008
Wireless Networking Radio Frequency Properties
Wednesday, January 30th, 2008An RF signal’s polarity is independent of its amplitude. Stations must use the same frequency to communicate. For example, OFDM (802.11a) (5 GHz) and HR-DSSS (802.11b) devices (2.4 GHz) operate at different frequencies, and cannot communicate with each other. A wireless station on channel 6 cannot communicate directly to another station on channel 11. Antennas […]