Wideband receive spatial modulation with time domain pre-equalizer for large MIMO systems
Document typeConference report
Rights accessOpen Access
Receive spatial modulation (RSM) schemes are promising for massive multiple-input-multiple-output (MIMO) systems at millimeter wave (mmWave) bands because they require reduced complexity and low consumption hardware at the user terminal and exploit the receive spatial dimension to attain high spectral efficiency. To the best of our knowledge, these schemes have been developed for narrowband transmission. In this paper, we adapt RSM schemes for outdoor wideband mmWave massive MIMO systems. We consider the downlink of a single user system operating with single carrier RSM and design a low complexity time-domain finite impulse response pre-equalizer to combat the intersymbol interference caused by the wideband transmission, assuming imperfect channel knowledge. We show that receive antenna selection (RAS) is necessary for attaining high spectral efficiency and we suggest fast and efficient RAS algorithm. Simulation results show that the proposed RSM scheme achieves comparable spectral efficiency to the fully digital orthogonal frequency division multiplexing MIMO system with superior energy efficiency.
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CitationRaafat Hosny Mohamed Fahm, A.; Agustin, A.; Vidal, J. Wideband receive spatial modulation with time domain pre-equalizer for large MIMO systems. A: IEEE Global Communications Conference. "2018 IEEE Global Communications Conference (GLOBECOM): proceedings: Abu Dhabi, UAE: 9-13 December 2018". 2018, p. 1-7.