@conference {950,
	title = {Symbol-Asynchronous Transmission In Multibeam Satellite User Down-Link: Rate Regions For Novel Superposition Coding Schemes},
	booktitle = {6th IEEE Global Conference on Signal and Information Processing},
	year = {2018},
	abstract = {<p>We consider the forward link of a multibeam satellite system with high spectral reuse and the novel low-complexity transmission and detection strategies from ["{\textquotedblleft}Exploratory analysis of superposition coding and rate splitting for multibeam satellite systems", ISWCS 2018]. More specifically, we study the impact of a time offset between the antenna beams that cooperate to simultaneously serve a given user. Assuming Gaussian signaling, we provide closed-form expressions for the achievable rate region. It is demonstrated that, in the absence of timing information at the gateway, this region is not affected by a time offset. Our numerical results further show that, in case timing is known at the gateway, an offset of half a symbol period at both user terminals is optimal in terms of spectral efficiency.</p>},
	author = {Nele Noels and Marc Moeneclaey and Tom{\'a}s Ram{\'\i}rez and Carlos Mosquera and M{\`a}rius Caus and Adriano Pastore}
}
