A method for computing the PAM representation for weak continuous phase modulation (CPM) is presented and applied to the modulation defined in the enhanced flight termination system (EFTS) standard. The pulse-amplitude modulation (PAM) representation was used to formulate a reduced-complexity detector whose performance is within 0.7 dB of maximum likelihood detection and 5.6 dB better than limiter-discriminator detection in the additive white Gaussian noise (AWGN) environment. The complexity of the reduced-complexity detector is less than 25% that of the maximum likelihood detector but, unlike the limiter-discriminator detector, requires a carrier phase PLL. In the presence of phase noise, the reduced-complexity detector outperforms limiter-discriminator detection when the RMS frequency deviation due to phase noise is less than 10% of the bit rate.
PAM approach to weak CPM and its application to flight termination receivers
IEEE Transactions on Aerospace and Electronic Systems ; 44 , 2 ; 468-480
2008-04-01
2182477 byte
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
PAM Approach to Weak CPM and Its Application to Flight Termination Receivers
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