2015/05/23 by Praneeth Kumar, Praneeth Kumar V, Kumar, Praneeth +3
Computer Science · Engineering · Mathematics · #Cooperative Communication and Network Coding #Energy Harvesting in Wireless Networks #FOS: Computer and information sciences #Full-Duplex Wireless Communications #Information Theory (cs.IT) #Wireless Communication Security Techniques #cs.IT #math.IT
paper · pdf · doi:10.48550/arxiv.1505.06317
To be presented at ISIT 2015, Hong Kong, China
arxiv created 2015/05/23 · openalex publication_date 2015/05/23 · arxiv updated 2015/05/26 · openalex created_date 2022/10/06 · openalex updated_date 2026/07/28
In this paper, we analyze the Gaussian X channel in the mixed interference regime. In this regime, multiple access transmission to one of the receivers is shown to be close to optimal in terms of sum rate. Three upper bounds are derived for the sum capacity in the mixed interference regime, and the subregions where each of these bounds dominate the others are identified. The genie-aided sum capacity upper bounds derived also show that the gap between sum capacity and the sum rate of the multiple access transmission scheme is small for a significant part of the mixed interference region. For any δ> 0, the region where multiple access transmission to one of the receivers is within δfrom sum capacity is determined.