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On the performance of Massive MIMO systems with single carrier transmission and phase noise
Linköping University, Department of Electrical Engineering, Communication Systems. Linköping University, The Institute of Technology.
2013 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

In the last decade we have experienced a rapid increase in the demand for high data rates over cellular networks. This increase has been partly satisfied by the introduction of multi-user multiple-input multiple-output (MU-MIMO). In such systems, the base station (BS) is equipped with multiple antennas and the users share the time-frequency resources. However, modern communication systems are highly power inefficient. Further, the increase in demand for higher data rates is expected to accelerate in the years to come due to the popularity of mobile devices like smartphones and tablets. Hence, next generation cellular systems arerequired to exhibit high energy efficiency as well as low power  consumption. Recently, it has been shown that the deployment of a large excess of base station (BS) antennas in comparison to the served users can be a promising candidate to meet these contradictory requirements. These systems are termed as Massive MIMO. When the number of BS antennas grows large, the channels between different users become orthogonal and low complexity transceiver processing exhibits sum-rate performance that is close to optimal. In order to realize the promised gains of Massive MIMO systems, it is required that power efficient and inexpensive components are used. In contemporary cellular systems, multi-carrier transmission is used since it facilitates simple equalization at the receiver side. However, multi-carrier signals exhibit high peak-to-average-power-ratio (PAPR) and require expensive highly linear power amplifiers. Power amplifiers in this regime are also very power inefficient. On the other hand single carrier signals exhibit lower PAPR and are suitable for signal design that is more robust to non-linear power amplifiers. Further, single-carrier signals are less vulnerable to hardware impairments, such as phase noise. In this thesis we study the fundamental limits of Massive MIMO systems in terms of sum-rate performance with single-carrier transmission and phase noise and provide important insight on the design of Massive MIMO under these scenarios.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 2013. , 27 p.
Series
Linköping Studies in Science and Technology. Thesis, ISSN 0280-7971 ; 1618
National Category
Communication Systems
Identifiers
URN: urn:nbn:se:liu:diva-97489Local ID: LIU-TEK-LIC-2013:52ISBN: 978-91-7519-513-1 (print)OAI: oai:DiVA.org:liu-97489DiVA: diva2:647960
Presentation
2013-10-11, Visionen, Hus B, Campus Valla, Linköpings universitet, Linköping, 10:15 (English)
Opponent
Supervisors
Available from: 2013-09-13 Created: 2013-09-13 Last updated: 2016-08-31Bibliographically approved
List of papers
1. On the Optimality of Single-Carrier Transmission in Large-Scale Antenna Systems
Open this publication in new window or tab >>On the Optimality of Single-Carrier Transmission in Large-Scale Antenna Systems
2012 (English)In: IEEE Wireless Communications Letters, ISSN 2162-2337, E-ISSN 2162-2345, Vol. 1, no 4, 276-279 p.Article in journal (Other academic) Published
Abstract [en]

A single carrier transmission scheme is presentedfor the frequency selective multi-user (MU) multiple-input singleoutput(MISO) Gaussian Broadcast Channel (GBC) with a basestation (BS) having M antennas and K single antenna users.The proposed transmission scheme has low complexity andfor M ≫ K it is shown to achieve near optimal sum-rateperformance at low transmit power to receiver noise power ratio.Additionally, the proposed transmission scheme results in anequalization-free receiver and does not require any MU resourceallocation and associated control signaling overhead. Also, thesum-rate achieved by the proposed transmission scheme is shownto be independent of the channel power delay profile (PDP). Interms of power efficiency, the proposed transmission scheme alsoexhibits an O(M) array power gain. Simulations are used toconfirm analytical observations.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2012
National Category
Communication Systems
Identifiers
urn:nbn:se:liu:diva-80173 (URN)10.1109/WCL.2012.041612.120046 (DOI)
Note

© Copyright 2012 IEEE Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.

Available from: 2012-08-22 Created: 2012-08-22 Last updated: 2017-12-07Bibliographically approved
2. Uplink Performance of Time-Reversal MRC in Massive MIMO Systems subject to Phase Noise
Open this publication in new window or tab >>Uplink Performance of Time-Reversal MRC in Massive MIMO Systems subject to Phase Noise
2015 (English)In: IEEE Transactions on Wireless Communications, ISSN 1536-1276, E-ISSN 1558-2248, Vol. 14, 711-723 p.Article in journal (Refereed) Published
Abstract [en]

Multi-user multiple-input multiple-output (MU-MIMO) cellular systems with an excess of base station (BS) antennas (Massive MIMO) offer unprecedented multiplexing gains and radiated energy efficiency. Oscillator phase noise is introduced in the transmitter and receiver radio frequency chains and severely degrades the performance of communication systems. We study the effect of oscillator phase noise in frequency-selective Massive MIMO systems with imperfect channel state information (CSI) and M BS antennas. In particular, we consider two distinct operation modes, namely when the phase noise processes at the BS antennas are identical (synchronous operation) and when they are independent (non-synchronous operation). We analyze a linear and low-complexity time-reversal maximum-ratio combining (TR-MRC) reception strategy. For both operation modes we derive a lower bound on the sum-capacity and we compare the performance of the two modes. Based on the derived achievable sum-rate, we show that with the proposed receive processing an O() array gain is achievable. Due to the phase noise drift the estimated effective channel becomes progressively outdated. Therefore, phase noise effectively limits the length of the interval used for data transmission and the number of scheduled users. The derived achievable rates provide insights into the optimum choice of the data interval length and the number of scheduled users.

Place, publisher, year, edition, pages
IEEE, 2015
National Category
Communication Systems
Identifiers
urn:nbn:se:liu:diva-97477 (URN)10.1109/TWC.2014.2359018 (DOI)000349674800010 ()
Note

Manuscript received March 5, 2014; revised July 10, 2014; accepted September 6, 2014. Date of publication September 18, 2014; date of current version February 6, 2015. This work was supported in part by the Swedish Foundation for Strategic Research and in part by ELLIIT. The work of S. K. Mohammed was supported by the Science and Engineering Research Board, Department of Science and Technology, Government of India. This paper was presented in part at the 50th Allerton Conference on Communication, Control and Computing, Urbana-Champaign, IL, USA, October 2012. The associate editor coordinating the review of this paper and approving it for publication was L. Sanguinetti.

Available from: 2013-09-13 Created: 2013-09-13 Last updated: 2017-12-06Bibliographically approved
3. Achievable Rates of ZF Receivers in Massive MIMO with Phase Noise Impairments
Open this publication in new window or tab >>Achievable Rates of ZF Receivers in Massive MIMO with Phase Noise Impairments
2013 (English)In: 2013 ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS, 2013, 1004-1008 p.Conference paper, Published paper (Refereed)
Abstract [en]

The effect of oscillator phase noise on the sum-rate performance of large multi-user multiple-input multiple-output (MU-MIMO) systems, termed as Massive MIMO, is studied. A Rayleigh fading MU-MIMO uplink channel is considered, where channel state information (CSI) is acquired via training. The base station (BS), which is equipped with an excess of antenna elements, M, uses the channel estimate to perform zero-forcing (ZF) detection. A lower bound on the sum-rate performance is derived. It is shown that the proposed receiver structure exhibits an O() array power gain. Additionally, the proposed receiver is compared with earlier studies that employ maximum ratio combining and it is shown that it can provide significant sum-rate performance gains at the medium and high signal-to-noise-ratio (SNR) regime. Further, the expression of the achievable sum rate provides new insights on the effect of various parameters on the overall system performance.

Series
ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS, ISSN 1058-6393
National Category
Communication Systems
Identifiers
urn:nbn:se:liu:diva-97478 (URN)10.1109/ACSSC.2013.6810441 (DOI)000341772900184 ()978-1-4799-2390-8 (ISBN)
Conference
47th Asilomar Conference on Signals, Systems and Computers
Available from: 2013-09-13 Created: 2013-09-13 Last updated: 2016-09-13Bibliographically approved

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