Beyond MassiveMIMO : The Potential of DataTransmission with Large Intelligent Surfaces
(2018) In IEEE Transactions on Signal Processing Abstract
In this paper, we consider the potential of datatransmission in a system with a massive number of radiating and sensing elements, thought of as a contiguous surface of electromagnetically active material. We refer to this as a Large Intelligent Surface (LIS). The "LIS" is a newly proposed concept, which conceptually goes beyond contemporary massive MIMO technology, and arises from our vision of a future where manmade structures are electronically active with integrated electronics and wireless communication making the entire environment "intelligent". Firstly, we consider capacities of singleantenna autonomous terminals communicating to the LIS where the entire surface is used as a receiving antennaarray in a perfect lineofsight... (More)
In this paper, we consider the potential of datatransmission in a system with a massive number of radiating and sensing elements, thought of as a contiguous surface of electromagnetically active material. We refer to this as a Large Intelligent Surface (LIS). The "LIS" is a newly proposed concept, which conceptually goes beyond contemporary massive MIMO technology, and arises from our vision of a future where manmade structures are electronically active with integrated electronics and wireless communication making the entire environment "intelligent". Firstly, we consider capacities of singleantenna autonomous terminals communicating to the LIS where the entire surface is used as a receiving antennaarray in a perfect lineofsight (LOS) propagation environment. Under the condition that the surfacearea is sufficiently large, the received signal after a matchedfiltering (MF) operation can be closely approximated by a sincfunctionlike intersymbol interference (ISI) channel. Secondly, we analyze a normalized capacity measured per unitsurface, for a fixed transmit power per volumeunit with different terminaldeployments. As terminaldensity increases, the limit of the normalized capacity [nats/s/Hz/volumeunit] achieved when wavelength <formula><tex>$\lambda$</tex></formula> approaches zero is equal to half of the transmit power per volumeunit divided by noise spatial power spectral density (PSD). Thirdly, we show that the number of independent signal dimensions that can be harvested per meter deployed surface is <formula><tex>$2/\lambda$</tex></formula> for onedimensional terminaldeployment, and <formula><tex>$\pi/\lambda^{2}$</tex></formula> per square meter for two and three dimensional terminaldeployments. Lastly, we consider implementations of the LIS in the form of a grid of conventional antennaelements, and show that the sampling lattice that minimizes the surfacearea and simultaneously obtains one independent signal dimension for every spent antenna is the hexagonal lattice.
(Less)
 author
 Hu, Sha ^{LU} ; Rusek, Fredrik ^{LU} and Edfors, Ove ^{LU}
 organization
 publishing date
 20180316
 type
 Contribution to journal
 publication status
 epub
 subject
 keywords
 2D sampling, Hankel transform, hexagonal lattice, independent signal dimension, intersymbol interference (ISI), Large intelligent surface (LIS), Lattices, Lenses, lineofsight (LOS), massive multiinput multioutput (MIMO), MIMO communication, normalized capacity, Receiving antennas, Surface treatment, Surface waves
 in
 IEEE Transactions on Signal Processing
 publisher
 IEEEInstitute of Electrical and Electronics Engineers Inc.
 external identifiers

 scopus:85044028460
 ISSN
 1053587X
 DOI
 10.1109/TSP.2018.2816577
 language
 English
 LU publication?
 yes
 id
 552776ea89af4ec4953da0d9716117ad
 date added to LUP
 20170825 16:42:11
 date last changed
 20180412 13:09:29
@article{552776ea89af4ec4953da0d9716117ad, abstract = {<p>In this paper, we consider the potential of datatransmission in a system with a massive number of radiating and sensing elements, thought of as a contiguous surface of electromagnetically active material. We refer to this as a Large Intelligent Surface (LIS). The "LIS" is a newly proposed concept, which conceptually goes beyond contemporary massive MIMO technology, and arises from our vision of a future where manmade structures are electronically active with integrated electronics and wireless communication making the entire environment "intelligent". Firstly, we consider capacities of singleantenna autonomous terminals communicating to the LIS where the entire surface is used as a receiving antennaarray in a perfect lineofsight (LOS) propagation environment. Under the condition that the surfacearea is sufficiently large, the received signal after a matchedfiltering (MF) operation can be closely approximated by a sincfunctionlike intersymbol interference (ISI) channel. Secondly, we analyze a normalized capacity measured per unitsurface, for a fixed transmit power per volumeunit with different terminaldeployments. As terminaldensity increases, the limit of the normalized capacity [nats/s/Hz/volumeunit] achieved when wavelength <formula><tex>$\lambda$</tex></formula> approaches zero is equal to half of the transmit power per volumeunit divided by noise spatial power spectral density (PSD). Thirdly, we show that the number of independent signal dimensions that can be harvested per meter deployed surface is <formula><tex>$2/\lambda$</tex></formula> for onedimensional terminaldeployment, and <formula><tex>$\pi/\lambda^{2}$</tex></formula> per square meter for two and three dimensional terminaldeployments. Lastly, we consider implementations of the LIS in the form of a grid of conventional antennaelements, and show that the sampling lattice that minimizes the surfacearea and simultaneously obtains one independent signal dimension for every spent antenna is the hexagonal lattice.</p>}, author = {Hu, Sha and Rusek, Fredrik and Edfors, Ove}, issn = {1053587X}, keyword = {2D sampling,Hankel transform,hexagonal lattice,independent signal dimension,intersymbol interference (ISI),Large intelligent surface (LIS),Lattices,Lenses,lineofsight (LOS),massive multiinput multioutput (MIMO),MIMO communication,normalized capacity,Receiving antennas,Surface treatment,Surface waves}, language = {eng}, month = {03}, publisher = {IEEEInstitute of Electrical and Electronics Engineers Inc.}, series = {IEEE Transactions on Signal Processing}, title = {Beyond MassiveMIMO : The Potential of DataTransmission with Large Intelligent Surfaces}, url = {http://dx.doi.org/10.1109/TSP.2018.2816577}, year = {2018}, }