This special issue of the Wiley International Journal of Satellite Communications and Networking hosts a selection of papers from the 5th Advanced Satellite Multimedia Systems (ASMS) Conference and the 11th Signal Processing for Space Communications (SPSC) Workshop, held in Cagliari, Italy, on September 13\u201315, 2010. The joint event was organized through a collaborative effort of the University of Bologna, the Institute of Communications and Navigation of DLR (German Aerospace Center), the European Space Agency (ESA), under the auspices of the Integral SatCom Initiative European Technology Platform and in cooperation with the Department of Electrical and Electronic Engineering of the University of Cagliar