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Distributed Massive...
Distributed Massive MIMO via all-Digital Radio Over Fiber
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- Aabel, Lise, 1992 (author)
- Telefonaktiebolaget L M Ericsson,Ericsson
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- Durisi, Giuseppe, 1977 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Sezgin, Ibrahim Can, 1992 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Jacobsson, Sven, 1990 (author)
- Telefonaktiebolaget L M Ericsson,Ericsson
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- Fager, Christian, 1974 (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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(creator_code:org_t)
- 2020
- 2020
- English.
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In: Conference Record - Asilomar Conference on Signals, Systems and Computers. - 1058-6393. ; 2020-November, s. 319-323
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https://research.cha...
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https://doi.org/10.1...
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Abstract
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- A crucial challenge in the implementation of distributed massive multiple-input multiple-output (MIMO) architectures is to provide phase coherence while, at the same time, limit the complexity of the remote-radio heads (RRHs), which is important for cost-efficient scalability. To address this challenge, we present in this paper a phase-coherent distributed MIMO architecture, based on off-the-shelf, low-cost components. In the proposed architecture, up- and down-conversion are carried out at the central unit (CU). The RRHs are connected to the CU by means of optical fibers carrying oversampled radio-frequency (RF) 1-bit signals. In the downlink, the 1-bit signal is generated via sigma-delta modulation. At the RRH, the RF signal is recovered from the 1-bit signal through a bandpass filter and a power amplifier, and then fed to an antenna. In the uplink, the 1-bit signal is generated by a comparator whose inputs are the low-noise-amplified received RF signal and a suitably designed dither signal. The performance of the proposed architecture is evaluated with satisfactory results both via simulation and measurements from a testbed.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Kommunikationssystem (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Communication Systems (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Signalbehandling (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Signal Processing (hsv//eng)
Publication and Content Type
- kon (subject category)
- ref (subject category)
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