Location-aware channel estimation for capacity gains on multibeam satellite links |
| |
Institution: | 1. David Braley Centre for Antibiotic Discovery, Michael G. DeGroote Institute for Infectious Disease Research, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON L8N 3Z5, Canada;1. Texas A & M Energy Institute, Texas A & M University, 302 Williams Administration Building, College Station, TX 77843-1372, USA;2. Artie McFerrin Department of Chemical Engineering, Texas A & M University, College Station, TX 77843-3122, USA;3. Department of Computing,Imperial College London, South Kensington SW7 2AZ, UK;1. Dow Corning Corporation, Auburn, MI, USA;2. Dow Corning Toray Co., Ltd., Chiba, Japan;3. Momentive Performance Materials Japan LLC, Gunma, Japan;4. Shin-Etsu Chemical Co., Ltd., Tokyo, Japan;5. Wacker Asahikasei Silicone Co., Ltd., Tokyo, Japan;6. JNC Corporation, Tokyo, Japan;7. Environmental Control Center Co., Ltd., Tokyo, Japan |
| |
Abstract: | Bandwidth is an expensive and scarce resource, thus its efficient exploitation is of paramount importance. Recent communication satellites feature sophisticated spatial access strategies through spot beams providing this way a total throughput in the range of 100 Gbit/s. Next generations of communication satellites, as postulated in the Satellite Communications Network of Experts (SatNEx) III, a project funded by the European Space Agency (ESA) for advanced research in satellite communications, require technological developments to achieve the Tbit/s region. Multibeam architectures formed by a central gateway, a multibeam satellite, and an aggressive frequency reuse strategy can meet such ambitious design goals. Interference problems are tackled by appropriate countermeasures such as (joint) precoding and beamforming on the forward link as well as multi-user detection on the return link; these methods require accurate and timely knowledge of the channel state, which in turn necessitates suitable algorithms for channel estimation. This paper addresses performance issues related to channel state estimation on the symbol-synchronous forward link and the frame-synchronous return link. It highlights for both directions the potential performance gain by assuming a priori knowledge of the user position, in this context referred to as location-aware channel estimation. |
| |
Keywords: | Multibeam satellite links Channel estimation Location awareness Precoding Multi-user detection |
本文献已被 ScienceDirect 等数据库收录! |
|