Title :
On-air results of spatial diversity for the MIL-STD-188-110B Appendix C (STANAG 4539) 9600 bps waveform
Author_Institution :
RF Commun. Div., Harris Corp., Rochester, NY, USA
Abstract :
In the early days of HF communications, CW and FSK waveforms were the prevalent means for data communications. These tone based signaling methods were very susceptible to frequency selective fading caused by multipath. To improve the reliability of these links, spatial diversity was commonly used. As newer, more robust waveforms were developed for HF, it was felt that spatial diversity was no longer needed. This paper investigates possible on-air performance improvements of using spatial diversity on modern HF waveforms such as the high data rate waveforms defined in US MIL-STD-188-110B.
Keywords :
HF radio propagation; data communication; digital radio; diversity reception; fading channels; military communication; military standards; multipath channels; radio links; telecommunication standards; 9600 bit/s; CW waveforms; FSK waveforms; HF communications; HF waveforms; MIL-STD-188-110B Appendix C; STANAG 4539; USA; data communications; frequency selective fading; high data rate waveforms; multipath; on-air results; radio link reliability; spatial diversity; tone based signaling methods; Bandwidth; Coherence; Fading; Frequency diversity; Frequency shift keying; Hafnium; Interleaved codes; Ionosphere; Receiving antennas; Reflection;
Conference_Titel :
Military Communications Conference, 2001. MILCOM 2001. Communications for Network-Centric Operations: Creating the Information Force. IEEE
Print_ISBN :
0-7803-7225-5
DOI :
10.1109/MILCOM.2001.985833
