Impact of Line-of-Sight and Unequal Spatial Correlation on Uplink MU-MIMO Systems
(2017) In IEEE Wireless Communications Letters 6(5). p.634-637- Abstract
- Closed-form approximations of the expected per-terminal signal-to-interference-plus-noise-ratio (SINR) and ergodic sum spectral efficiency of a multiuser multiple-input multiple-output system are presented. Our analysis assumes spatially correlated Ricean fading channels with maximum-ratio combining on the uplink. Unlike previous studies, our model accounts for the presence of unequal correlation matrices, unequal Rice factors, as well as unequal link gains to each terminal. The derived approximations lend themselves to useful insights, special cases and show the combined impact of line-of-sight (LoS) and correlated components. Numerical results show that while unequal correlation matrices enhance the system performance, the presence of... (More)
- Closed-form approximations of the expected per-terminal signal-to-interference-plus-noise-ratio (SINR) and ergodic sum spectral efficiency of a multiuser multiple-input multiple-output system are presented. Our analysis assumes spatially correlated Ricean fading channels with maximum-ratio combining on the uplink. Unlike previous studies, our model accounts for the presence of unequal correlation matrices, unequal Rice factors, as well as unequal link gains to each terminal. The derived approximations lend themselves to useful insights, special cases and show the combined impact of line-of-sight (LoS) and correlated components. Numerical results show that while unequal correlation matrices enhance the system performance, the presence of strong LoS has an opposite effect. The approximations are general and remain insensitive to changes in the system dimensions, signal-to-noise-ratios, LoS levels, and correlation levels. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/6fe704c9-9399-4d5b-bc9c-3e8a7cdb7b89
- author
- Tataria, Harsh LU ; Smith, Peter J ; Greenstein, Larry J. ; Dmochowski, Pawel A and Matthaiou, Michail
- publishing date
- 2017-10-01
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Unequal spatial correlation, Line-of-sight, Ricean fading, Maximum-ratio combining, Ergodic spectral efficiency, Massive MIMO, Statistical analysis
- in
- IEEE Wireless Communications Letters
- volume
- 6
- issue
- 5
- article number
- 7976368
- pages
- 4 pages
- publisher
- IEEE - Institute of Electrical and Electronics Engineers Inc.
- external identifiers
-
- scopus:85023621671
- ISSN
- 2162-2345
- DOI
- 10.1109/LWC.2017.2726062
- language
- English
- LU publication?
- no
- id
- 6fe704c9-9399-4d5b-bc9c-3e8a7cdb7b89
- date added to LUP
- 2018-11-28 13:25:10
- date last changed
- 2022-03-25 06:20:13
@article{6fe704c9-9399-4d5b-bc9c-3e8a7cdb7b89, abstract = {{Closed-form approximations of the expected per-terminal signal-to-interference-plus-noise-ratio (SINR) and ergodic sum spectral efficiency of a multiuser multiple-input multiple-output system are presented. Our analysis assumes spatially correlated Ricean fading channels with maximum-ratio combining on the uplink. Unlike previous studies, our model accounts for the presence of unequal correlation matrices, unequal Rice factors, as well as unequal link gains to each terminal. The derived approximations lend themselves to useful insights, special cases and show the combined impact of line-of-sight (LoS) and correlated components. Numerical results show that while unequal correlation matrices enhance the system performance, the presence of strong LoS has an opposite effect. The approximations are general and remain insensitive to changes in the system dimensions, signal-to-noise-ratios, LoS levels, and correlation levels.}}, author = {{Tataria, Harsh and Smith, Peter J and Greenstein, Larry J. and Dmochowski, Pawel A and Matthaiou, Michail}}, issn = {{2162-2345}}, keywords = {{Unequal spatial correlation; Line-of-sight; Ricean fading; Maximum-ratio combining; Ergodic spectral efficiency; Massive MIMO; Statistical analysis}}, language = {{eng}}, month = {{10}}, number = {{5}}, pages = {{634--637}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, series = {{IEEE Wireless Communications Letters}}, title = {{Impact of Line-of-Sight and Unequal Spatial Correlation on Uplink MU-MIMO Systems}}, url = {{http://dx.doi.org/10.1109/LWC.2017.2726062}}, doi = {{10.1109/LWC.2017.2726062}}, volume = {{6}}, year = {{2017}}, }