On Delay Diversity in OQAM/FBMC Based Transmission Schemes
Conference: WSA 2019 - 23rd International ITG Workshop on Smart Antennas
04/24/2019 - 04/26/2019 at Vienna, Austria
Proceedings: ITG-Fb. 286: WSA 2019
Pages: 5Language: englishTyp: PDF
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Authors:
Liu, Wenfeng (Wuhan National Laboratory for Optoelectronics, School of Electronic Information and Communications, Huazhong University of Science and Technology, China & Institute of Telecommunications, Technische Universität Wien, Austria)
Schwarz, Stefan (Christian Doppler Laboratory for Dependable Wireless Connectivity for the Society in Motion & Institute of Telecommunications, Technische Universität Wien, Austria)
Chen, Da; Jiang, Tao (Wuhan National Laboratory for Optoelectronics, School of Electronic Information and Communications, Huazhong University of Science and Technology, China)
Rupp, Markus (Institute of Telecommunications, Technische Universität Wien, Austria)
Abstract:
Offset quadrature amplitude modulation based filter bank multicarrier (OQAM/FBMC) is a spectrally efficient alternative to the conventional orthogonal frequency division multiplexing (OFDM) due to its feature of time-frequency localization. However, in presence of the intrinsic interference, it is not as straightforward as OFDM for OQAM/FBMC to benefit from the gains of incorporating multiple-input multiple-output processing, especially for the spatial diversity technique. In this paper, we propose a low-complexity delay diversity (DD) scheme for OQAM/FBMC systems, which is formed by transmitting delayed versions of the same signal on multiple transmit antennas. The associated channel estimation and equalization are also developed for OQAM/FBMC systems with DD. Simulation results verify the effectiveness of the proposed channel estimation method and demonstrate that the proposed DD scheme obtains significant improvements in bit error ratio performance.