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Analysis of Nonorthogonal Training in Massive MIMO Under Channel Aging With SIC Receivers
IIT Guwahati, India.
IISc Bangalore, India.
Univ Peradeniya, Sri Lanka.
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, Faculty of Science & Engineering.ORCID iD: 0000-0002-7599-4367
2019 (English)In: IEEE Signal Processing Letters, ISSN 1070-9908, E-ISSN 1558-2361, Vol. 26, no 2, p. 282-286Article in journal (Refereed) Published
Abstract [en]

We analyze the effect of channel aging on the achievable rate of time division duplexed massive multiple input multiple output systems serving a number of users under aging channels, using nonorthogonal multiple access (NOMA) and orthogonal multiple access (OMA). Using the recently proposed shared uplink pilot based channel estimation for NOMA, we derive bounds on the channel estimation error variance for the two schemes. We then derive the achievable spectral efficiencies of the two schemes. Using numerical results, we show that, in slowly varying channels, using NOMA with shared pilots is preferable over OMA, while the reverse is true under fast varying channels.

Place, publisher, year, edition, pages
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC , 2019. Vol. 26, no 2, p. 282-286
Keywords [en]
Massive MIMO; Non-orthogonal multiple access; channel aging; channel estimation; performance analysis
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:liu:diva-154320DOI: 10.1109/LSP.2018.2889955ISI: 000455914600001OAI: oai:DiVA.org:liu-154320DiVA, id: diva2:1285537
Note

Funding Agencies|ELLIIT; Swedish Research Council (VR)

Available from: 2019-02-04 Created: 2019-02-04 Last updated: 2019-03-06

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