Abstract
In this thesis, we derive a space-time code design criterion for continuous phase frequency shift keying (CPFSK) over frequency-selective fading channels. Our derivation is based on a speci‾c matrix that is related to the input symbols of the CPFSK modulators. With this code design criterion, we propose a simple interleaved space-time encoding scheme for CPFSK modulation over frequency-selective correlated fading channels to exploit potential temporal, spatial and multipath diversity advantages. Such an encoding scheme consists of a ring convolutional encoder followed by a spatial encoder between which a convolutional interleaver and cascaded with an extender is placed. A decoding algorithm that generates symbol metrics for the Viterbi decoder of convolutional codes from the spatial modulation trellis is examined.