General rank beamforming using full rate real-value OSTBC for multicasting networks

Conference: WSA 2020 - 24th International ITG Workshop on Smart Antennas
02/18/2020 - 02/20/2020 at Hamburg, Germany

Proceedings: ITG-Fb. 291: WSA 2020

Pages: 5Language: englishTyp: PDF

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Taleb, Dima; Pesavento, Marius (Communication Systems Group, Technische Universit├Ąt Darmstadt, Darmstadt, Germany)

In multicasting networks, a multiple antennas base station broadcasts the same information to a single group of single-antenna users. In this paper we propose a novel approach to address the problem of insufficient degrees of freedom in multicasting networks and provide general rank beamforming solutions. Our beamforming technique is based on real-valued full rate orthogonal space-time block codes. The quality of service optimization problem is solved and the beamforming solutions are combined with real-valued OSTBC code. Simple symbol-by- symbol decoding can be used efficiently at each network user to retrieve the transmitted information. Simulation results demonstrates a superior performance compared with the state-of- the-art design especially for networks with large number of users.