Yuan, J;
Jin, S;
Wen, C-K;
Wong, K-K;
(2017)
The Distributed MIMO Scenario: Can Ideal ADCs Be Replaced by Low-Resolution ADCs?
IEEE Wireless Communications Letters
, 6
(4)
pp. 470-473.
10.1109/LWC.2017.2704604.
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Abstract
This letter considers the architecture of a distributed antenna system, which is made up of a massive number of single-antenna remote radio heads (RRHs), some with full-resolution but others with low-resolution analog-to-digital converter (ADC) receivers. This architecture is greatly motivated by its high energy efficiency and low-cost implementation. We derive the worst-case uplink spectral efficiency (SE) of the system assuming a frequency-flat channel and maximum-ratio combining, and reveal that the SE increases as the number of quantization bits for the low-resolution ADCs increases, and the SE converges as the number of RRHs with low-resolution ADCs grows. Our results furthermore demonstrate that a great improvement can be obtained by adding a majority of RRHs with low-resolution ADC receivers, if sufficient quantization precision and an acceptable proportion of high-to-low resolution RRHs are used.
| Type: | Article |
|---|---|
| Title: | The Distributed MIMO Scenario: Can Ideal ADCs Be Replaced by Low-Resolution ADCs? |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1109/LWC.2017.2704604 |
| Publisher version: | https://doi.org/10.1109/LWC.2017.2704604 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Technology, Computer Science, Information Systems, Engineering, Electrical & Electronic, Telecommunications, Computer Science, Engineering, Distributed antenna system, low-resolution ADC receiver, massive MIMO, spectral efficiency, MASSIVE MIMO, SYSTEMS, CAPACITY |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/1573969 |
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