Title :
DFSE equalization of dual-h CPM over UHF MILSATCOM channels
Author :
Peterson, Bror W. ; Stephens, Donald R. ; Tranter, William H.
Author_Institution :
Raytheon Co., St. Petersburg, FL, USA
Abstract :
To meet the demand for higher data rate MIL-STD-188-181B has added a set of dual-h continuous phase modulation (CPM) waveforms that nearly double the available data rates without requiring additional transmit power. Unfortunately, rates greater than 56 kbit/s are constrained by severe intersymbol interference (ISI) induced by narrow satellite crystal filters. In this paper, we study the application of decision feedback sequence estimation (DFSE) in order to equalize a 64 kbit/s dual-h quaternary full response CPM waveform transmitted over a representative 25 kHz UHF MILSATCOM channel. The performance is evaluated by Monte-Carlo simulation. Results show DFSE equalization offers an effective and computationally manageable approach to higher data rates using legacy waveforms.
Keywords :
Monte Carlo methods; UHF radio propagation; continuous phase modulation; data communication; decision feedback equalisers; military communication; military standards; mobile radio; satellite communication; sequential estimation; 25 kHz; 64 kbit/s; DFSE equalization; MIL-STD-188-181B; Monte-Carlo simulation; UHF MILSATCOM channels; continuous phase modulation; data rate; decision feedback sequence estimation; dual-h CPM; legacy waveforms; performance evaluation; quaternary full response CPM waveform; Assembly; Band pass filters; Bandwidth; Chebyshev approximation; Equalizers; Intersymbol interference; Military satellites; Satellite broadcasting; Transponders; USA Councils;
Conference_Titel :
MILCOM 2002. Proceedings
Print_ISBN :
0-7803-7625-0
DOI :
10.1109/MILCOM.2002.1179688
