Title :
A COFDM-based radio for HDR LOS networked communications
Author :
Moose, Paul H. ; Roderick, David ; North, Richard ; Geile, Michael
Author_Institution :
Dept. of Electr. & Comput. Eng., Naval Postgraduate Sch., Monterey, CA, USA
Abstract :
A coded orthogonal frequency division multiplexed (COFDM) radio has been developed for high data rate (HDR) line-of-sight (LOS) communications in a mobile wireless network. COFDM has been chosen over more traditional single carrier adaptive equalization modulation techniques due to its better bandwidth efficiency and to its increased robustness to multipath fading and to interference. The radio is designed to operate in a burst mode, asynchronously exchanging radio frequency (RF) packets with other nodes in a wireless network. The data rate in each burst is optimized to provide the maximum data rate supported by the channel conditions. Four data rates are presently supported within a 600 kHz channelization; 1536 kbps, 768 kbps, 384 kbps, and 64 kbps. In addition, the radio may be operated in a synchronous continuous mode for broadcast or point-to-point applications
Keywords :
OFDM modulation; UHF radio propagation; digital radio; fading channels; forward error correction; marine systems; military equipment; mobile radio; modems; multipath channels; packet radio networks; radio broadcasting; radiofrequency interference; 1536 kbit/s; 384 kbit/s; 600 kHz; 64 kbit/s; 768 kbit/s; COFDM-based radio; FEC coding; HDR LOS networked communications; RF packets; bandwidth efficiency; broadcast applications; burst mode operation; channel conditions; coded orthogonal frequency division multiplexing; data rate; high data rate; interference; line-of-sight communications; maximum data rate; military UHF frequency band; mobile wireless network; modem; modulation; multipath fading; point-to-point applications; radio frequency packets; single carrier adaptive equalization; synchronous continuous mode; wireless network; Adaptive equalizers; Bandwidth; Fading; Frequency division multiplexing; Interference; Mobile communication; Radio broadcasting; Radio frequency; Robustness; Wireless networks;
Conference_Titel :
Communications, 1999. ICC '99. 1999 IEEE International Conference on
Conference_Location :
Vancouver, BC
Print_ISBN :
0-7803-5284-X
DOI :
10.1109/ICC.1999.767920
