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Massive MU-MIMO-OFD...
Massive MU-MIMO-OFDM Downlink with One-Bit DACs and Linear Precoding
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- Jacobsson, Sven, 1990 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Durisi, Giuseppe, 1977 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Coldrey, Mikael, 1972 (author)
- Telefonaktiebolaget L M Ericsson,Ericsson
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- Studer, Christoph (author)
- Cornell University
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(creator_code:org_t)
- 2018
- 2018
- English.
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In: Proceedings - IEEE Global Communications Conference, GLOBECOM. - 2334-0983 .- 2576-6813. ; , s. 1-6
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Abstract
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- Massive multiuser (MU) multiple-input multiple- output (MIMO) is foreseen to be a key technology in future wireless communication systems. In this paper, we analyze the downlink performance of an orthogonal frequency division multiplexing (OFDM)-based massive MU-MIMO system in which the base station (BS) is equipped with 1-bit digital-to-analog converters (DACs). Using Bussgang’s theorem, we characterize the performance achievable with linear precoders (such as maximal-ratio transmission and zero forcing) in terms of bit error rate (BER). Our analysis accounts for the possibility of oversampling the time-domain transmit signal before the DACs. We further develop a lower bound on the information-theoretic sum-rate throughput achievable with Gaussian inputs.Our results suggest that the performance achievable with 1-bit DACs in a massive MU-MIMO-OFDM downlink are satisfactory provided that the number of BS antennas is sufficiently large.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Kommunikationssystem (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Communication Systems (hsv//eng)
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