Abstract
AbstractWe introduce woven coded continuous phase frequency shift keying (WCCPFSK) as a serial concatenation of several outer convolutional codes and inner continuous phase frequency shift keying (CPFSK). WCCPFSK is a generalization of the serially concatenated CPFSK modulation scheme which uses only one outer convolutional code. We compute the active burst distances of CPFSK and estimate the free distance of systems with one outer code and of WCCPFSK with several outer codes. We show that WCCPFSK with several outer codes achieves the larger free distance. This results in better performance at low bit error rates, which we demonstrate in simulations. Copyright © 2004 AEI
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