@article {guillen06parametermodulation,
	title = {Parameter free iterative decoding metrics for non-coherent orthogonal modulation},
	journal = {IEE Electronics Letters},
	volume = {42},
	year = {2006},
	month = {Aug},
	pages = {1054{\textendash}1056},
	issn = {0013-5194},
	doi = {10.1049/el:20061292},
	author = {Guill{\'e}n i F{\`a}bregas, Albert and Alex Grant}
}
