Title :
Implementation of short wave wideband data transmission by means of OFDM
Author_Institution :
Manuf. Dept., China Electron. Syst. Eng. Co., Beijing, China
Abstract :
The paper presents a modem design to implement HF wideband data transmission based on orthogonal frequency division multiplexing (OFDM). In order to reduce the multipath fading effect on the short wave channel, the design adopted OFDM, inband frequency diversity, and turbo code technologies. On condition that the intensive cochannel interference is suppressed, the modem can realize transmission at data rates of 8 kb/s, 16 kb/s and 32 kb/s on a 125 kHz bandwidth HF channel. The performance of this modem in a typical HF channel is also given by digital emulation.
Keywords :
OFDM modulation; cochannel interference; data communication; diversity reception; fading channels; interference suppression; modems; multipath channels; turbo codes; 125 kHz; 8 to 32 kbit/s; HF wideband data transmission; OFDM; cochannel interference suppression; inband frequency diversity; modem design; multipath fading; orthogonal frequency division multiplexing; short wave wideband data transmission; turbo code; Bandwidth; Data communication; Fading; Frequency diversity; Hafnium; Interchannel interference; Modems; OFDM; Turbo codes; Wideband;
Conference_Titel :
Environmental Electromagnetics, 2003. CEEM 2003. Proceedings. Asia-Pacific Conference on
Conference_Location :
Hangzhou, China
Print_ISBN :
7-5635-0802-3
DOI :
10.1109/CEEM.2003.238533
