eprintid: 1573969 rev_number: 22 eprint_status: archive userid: 608 dir: disk0/01/57/39/69 datestamp: 2017-09-17 00:50:44 lastmod: 2021-09-20 22:24:18 status_changed: 2017-12-05 12:01:56 type: article metadata_visibility: show creators_name: Yuan, J creators_name: Jin, S creators_name: Wen, C-K creators_name: Wong, K-K title: The Distributed MIMO Scenario: Can Ideal ADCs Be Replaced by Low-Resolution ADCs? ispublished: pub divisions: UCL divisions: B04 divisions: C05 divisions: F46 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 note: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. 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. date: 2017-05-16 date_type: published publisher: IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC official_url: https://doi.org/10.1109/LWC.2017.2704604 oa_status: green full_text_type: other language: eng primo: open primo_central: open_green article_type_text: Article verified: verified_manual elements_id: 1419678 doi: 10.1109/LWC.2017.2704604 lyricists_name: Wong, Kai-Kit lyricists_id: KWONG98 actors_name: Stacey, Thomas actors_id: TSSTA20 actors_role: owner full_text_status: public publication: IEEE Wireless Communications Letters volume: 6 number: 4 pagerange: 470-473 pages: 4 issn: 2162-2345 citation: 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 <https://doi.org/10.1109/LWC.2017.2704604>. Green open access document_url: https://discovery.ucl.ac.uk/id/eprint/1573969/1/Wong-KK_FINAL%20VERSION.pdf