2018/04/03 by Belkacem Mouhouche, Mouhouche, Belkacem, Mohammed Al-Imari +3
Computer Science · Engineering · Mathematics · #Advanced MIMO Systems Optimization #FOS: Computer and information sciences #Information Theory (cs.IT) #Satellite Communication Systems #Telecommunications and Broadcasting Technologies #cs.IT #math.IT
paper · pdf · doi:10.48550/arxiv.1804.01048
arxiv created 2018/04/03 · openalex publication_date 2018/04/03 · arxiv updated 2018/04/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Recent studies have shown the potential performance gain of Non Uniform Constellations (NUC) compared to the conventional uniform constellations. NUC can be a promising candidate in 5G systems to increase the data throughput. In the literature, NUC is designed for a specific SNR value and propagation channel. However, in broadcast/multicast services, the received signal by different users will see independent and different channels. Hence, in this paper, we focus on the potential gain of NUC when jointly optimized for more than one propagation channel. In order to assess the gain, we propose an iterative algorithm to jointly optimize the NUC for different channel conditions. The resulting constellations are then compared to uniform constellation and single channel NUC. The simulation results show that the newly designed constellations outperform the classical single channel NUC across different channel conditions when the average performance (across different channels) is considered.