Title :
Differential detection of GMSK signals with low BtT using the SOVA
Author_Institution :
Philips Paging, Cambridge, UK
fDate :
4/1/1998 12:00:00 AM
Abstract :
A noncoherent Gaussian minimum phase-shift keying (GMSK) detector using differential phase detection combined with the soft-output Viterbi algorithm (SOVA) is presented. This approach overcomes the severe intersymbol interference (ISI) of GMSK signals with low BtT. Unlike conventional detectors the SOVA produces soft-decision bits resulting in larger coding gains in subsequent convolutional decoders
Keywords :
Viterbi detection; convolutional codes; demodulation; intersymbol interference; maximum likelihood estimation; minimum shift keying; sequences; GMSK signals; Gaussian minimum phase-shift keying; ISI; SOVA; coding gains; convolutional decoders; differential detection; differential phase detection; intersymbol interference; low BtT; maximum likelihood sequence estimation; noncoherent GMSK detector; soft-decision bits; soft-output Viterbi algorithm; AWGN channels; Additive white noise; Bit error rate; Communications Society; Detectors; Fading; Filters; Gaussian noise; Sampling methods; Signal detection;
Journal_Title :
Communications, IEEE Transactions on
