2007/09/05 by Abdellatif Zaidi, A. Zaidi, Zaidi, A. +3
Computer Science · Engineering · Mathematics · #Cellular Automata and Applications #Cooperative Communication and Network Coding #FOS: Computer and information sciences #H.1.1 #Information Theory (cs.IT) #Wireless Communication Security Techniques #cs.IT #math.IT
paper · pdf · doi:10.48550/arxiv.0709.0518
7 pages, Proc. of IEEE International Symposium on Information theory, ISIT 2007, Nice, France
arxiv created 2007/09/05 · openalex publication_date 2007/09/05 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
In this work, we consider a partially cooperative relay broadcast channel (PC-RBC) controlled by random parameters. We provide rate regions for two different situations: 1) when side information (SI) Sn on the random parameters is non-causally known at both the source and the relay and, 2) when side information Sn is non-causally known at the source only. These achievable regions are derived for the general discrete memoryless case first and then extended to the case when the channel is degraded Gaussian and the SI is additive i.i.d. Gaussian. In this case, the source uses generalized dirty paper coding (GDPC), i.e., DPC combined with partial state cancellation, when only the source is informed, and DPC alone when both the source and the relay are informed. It appears that, even though it can not completely eliminate the effect of the SI (in contrast to the case of source and relay being informed), GDPC is particularly useful when only the source is informed.