A novel relay-based interference alignment strategy for multi-user networks
作者： Yue Tian , Mark Beach , Andy Nix
DOI: 10.1109/SPAWC.2015.7227114
关键词:
摘要: Interference alignment (IA) is a transmission strategy that use channel state information (CSI) to improve the capacity of multiuser communication systems. However, performance IA always limited by accuracy CSI. In particular, this problem in time-varying channels, as CSI at transmitter (CSIT) may become outdated when changing quickly. study, we propose novel cooperative relay-based interference (RIA) scheme, which aims increase number Degrees Freedom (DoF) for networks, even required source-to-destination CSIT completely outdated. With RIA DoF region firstly derived under an ideal case. Then, scheme respectively presented non-ideal cases. Furthermore, achievable regions these cases are derived. addition, trade-off between and non-relay based schemes analysed.
bristol.ac.uk
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