Search: onr:"swepub:oai:DiVA.org:liu-137616" >
Performance of Mass...
Performance of Massive MIMO Uplink With Zero-Forcing Receivers Under Delayed Channels
-
- Papazafeiropoulos, Anastasios K. (author)
- Imperial Coll London, England; University of Edinburgh, Scotland
-
- Ngo, Hien Quoc (author)
- Linköpings universitet,Kommunikationssystem,Tekniska fakulteten,Queen’s University Belfast, Belfast, Northern Ireland
-
- Ratnarajah, Tharmalingam (author)
- University of Edinburgh, UK
-
(creator_code:org_t)
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2017
- 2017
- English.
-
In: IEEE Transactions on Vehicular Technology. - : IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC. - 0018-9545 .- 1939-9359. ; 66:4, s. 3158-3169
- Related links:
-
https://urn.kb.se/re...
-
show more...
-
https://doi.org/10.1...
-
show less...
Abstract
Subject headings
Close
- In this paper, we analyze the performance of the up-link communication of massive multicell multiple-input multiple-output (MIMO) systems under the effects of pilot contamination and delayed channels because of terminal mobility. The base stations (BSs) estimate the channels through the uplink training and then use zero-forcing (ZF) processing to decode the transmit signals from the users. The probability density function (pdf) of the signal-to-interference-plus-noise ratio (SINR) is derived for any finite number of antennas. From this pdf, we derive an achievable ergodic rate with a finite number of BS antennas in closed form. Insights into the impact of the Doppler shift (due to terminal mobility) at the low signal-to-noise ratio (SNR) regimes are exposed. In addition, the effects on the outage probability are investigated. Furthermore, the power scaling law and the asymptotic performance result by infinitely increasing the numbers of antennas and terminals (while their ratio is fixed) are provided. The numerical results demonstrate the performance loss for various Doppler shifts. Among the interesting observations revealed is that massive MIMO is favorable even under channel aging conditions.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
Keyword
- Delayed channels; massive multiple-input multiple-output (MIMO); multiuser MIMO system; zero-forcing (ZF) processing
Publication and Content Type
- ref (subject category)
- art (subject category)
Find in a library
To the university's database