Title :
Loss of SNR in Low Pass Filtered FM/MSK
Author_Institution :
Hughes Aircraft Company, Ground Systems Group, Fullerton, CA
Abstract :
In a direct sequence pseudonoise (DSPN) spread spectrum link the minimum shift keying (MSK) modulation method is used to achieve good spectral containment with constant carrier envelope. Here the spectral containment is improved by direct FM modulation with a low pass filtered chip stream. The resulting loss of signal-to-noise ratio (SNR) from intersymbol interference is traded against improved spectral characteristics.
Keywords :
Binary phase shift keying; Data communication; Filtering; Frequency modulation; Interference; Low pass filters; Phase modulation; Propagation losses; Quadrature phase shift keying; Spread spectrum communication;
Conference_Titel :
Military Communications Conference - Communications-Computers: Teamed for the 90's, 1986. MILCOM 1986. IEEE
DOI :
10.1109/MILCOM.1986.4805841
