Zobrazeno 1 - 9
of 9
pro vyhledávání: '"Alex Oliveras Martinez"'
Publikováno v:
IEEE Access, Vol 6, Pp 2899-2907 (2018)
Massive MIMO is commonly described as a large number of base station (BS) antennas serving a smaller number of single-antenna users. However, adding a second antenna to the user handset opens the possibility to exploit multiplexing techniques and obt
Externí odkaz:
https://doaj.org/article/8f97e7490476475b86ea28f83fc5c3ea
Publikováno v:
Martinez, A O, Nielsen, J Ø, Carvalho, E D & Popovski, P 2018, ' An Experimental Study of Massive MIMO Properties in 5G Scenarios ', I E E E Transactions on Antennas and Propagation, vol. 66, no. 12, 8471108, pp. 7206-7215 . https://doi.org/10.1109/TAP.2018.2871881
Three main characteristics of massive multiple-input-multiple-output (MIMO) are studied. The widespread use of these characteristics and their lack of validation motivates this paper based in measurements. First, we study the channel hardening when t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d4e7e08a0e34af5df34225a00b1c4d47
https://vbn.aau.dk/ws/files/293051374/An_Experimental_Study_of_Massive_MIMO.pdf
https://vbn.aau.dk/ws/files/293051374/An_Experimental_Study_of_Massive_MIMO.pdf
Publikováno v:
Martinez, A O, Carvalho, E D & Nielsen, J Ø 2016, Massive MIMO Properties based on Measured Channels : Channel Hardening, User Decorrelation and Channel Sparsity . in 50th Asilomar Conference on Signals, Systems, and Computers, 2016 . IEEE, pp. 1804-1808, The 50th anniversary of the Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, United States, 06/11/2016 . https://doi.org/10.1109/ACSSC.2016.7869694
ACSSC
ACSSC
Three prominent features of massive MIMO are studied using channel measurements. Those features are extensively exploited in signal processing methods for massive MIMO and have been only partially, or not at all, validated. First, channel hardening i
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7ebd8510ae843ec37a9b9bfd208197f6
https://vbn.aau.dk/da/publications/39948891-3b30-401c-96d6-a0b96dfd8e04
https://vbn.aau.dk/da/publications/39948891-3b30-401c-96d6-a0b96dfd8e04
Publikováno v:
Jing, L, Carvalho, E D, Popovski, P & Martinez, A O 2016, ' Design and Performance Analysis of Noncoherent Detection Systems With Massive Receiver Arrays ', I E E E Transactions on Signal Processing, vol. 64, no. 19, pp. 5000-5010 . https://doi.org/10.1109/TSP.2016.2591905
Harvesting the gain of a large number of antennas in a mmWave band has mainly been relying on the costly operation of channel state information (CSI) acquisition and cumbersome phase shifters. Recent works have started to investigate the possibility
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be3d972f31864bd6f5f31ccf5c718b0c
http://arxiv.org/abs/1606.06032
http://arxiv.org/abs/1606.06032
Autor:
Jukka-Pekka Nuutinen, Gert Frølund Pedersen, Wei Fan, Jesper Ødum Nielsen, Pekka Kyosti, Alex Oliveras Martinez
Publikováno v:
VTC Spring
Fan, W, Kyösti, P, Nuutinen, J-P, Martinez, A O, Nielsen, J Ø & Pedersen, G F 2016, Generating Spatial Channel Models in Multi-probe Anechoic Chamber Setups . in Vehicular Technology Conference (VTC Spring), 2016 IEEE 83rd . IEEE, 2016 IEEE 83rd Vehicular Technology Conference VTC2016-Spring, Nanjing, China, 15/05/2016 . https://doi.org/10.1109/VTCSpring.2016.7504257
Fan, W, Kyösti, P, Nuutinen, J-P, Martinez, A O, Nielsen, J Ø & Pedersen, G F 2016, Generating Spatial Channel Models in Multi-probe Anechoic Chamber Setups . in Vehicular Technology Conference (VTC Spring), 2016 IEEE 83rd . IEEE, 2016 IEEE 83rd Vehicular Technology Conference VTC2016-Spring, Nanjing, China, 15/05/2016 . https://doi.org/10.1109/VTCSpring.2016.7504257
This paper discusses multi-probe anechoic chamber setups for evaluating MIMO capable terminals with emphasis on generating spatial channel models. The multi-probe anechoic chamber method is a promising method for over the air testing. The reason can
Publikováno v:
Oliveras Martínez, À, Carvalho, E D, Nielsen, J Ø & Jing, L 2016, Frequency Dependence of Measured Massive MIMO Channel Properties . in Vehicular Technology Conference (VTC Spring), 2016 IEEE 83rd . IEEE, 2016 IEEE 83rd Vehicular Technology Conference VTC2016-Spring, Nanjing, China, 15/05/2016 . https://doi.org/10.1109/VTCSpring.2016.7504250
VTC Spring
VTC Spring
A multi-user massive MIMO measurement campaign is conducted to study the channel propagation characteristics (e.g. user correlation, sum of eigenvalues and condition number), focusing on the stability over frequencies and the impact of the array aper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4e980ce257d9366199bf8291c96d9dc2
https://vbn.aau.dk/da/publications/fbc470fc-6821-4471-84d1-bad062a908df
https://vbn.aau.dk/da/publications/fbc470fc-6821-4471-84d1-bad062a908df
Publikováno v:
Martinez, A O, Eggers, P C F & Carvalho, E D 2016, Geometry-Based Stochastic Channel Models for 5G : Extending Key Features for Massive MIMO . in Personal, Indoor, and Mobile Radio Communications (PIMRC), 2016 IEEE 27th Annual International Symposium on . IEEE, IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications workshops, 27th Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Valencia, Spain, 04/09/2016 . https://doi.org/10.1109/PIMRC.2016.7794648
PIMRC
PIMRC
This paper introduces three key features in geometry-based stochastic channel models in order to include massive MIMO channels. Those key features consists of multi-user (MU) consistency, non-stationarities across the base station array and inclusion
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::73266e18020728e410d1b9082c26c6c3
Publikováno v:
Oliveras Martínez, À, De Carvalho, E & Nielsen, J Ø 2014, Towards Very Large Aperture Massive MIMO : a measurement based study . in IEEE GLOBECOM 2014 proceedings . IEEE, GLOBECOM-conference record / IEEE Global Telecommunications Conference, pp. 281-286, Globecom 2014, Austin, United States, 08/12/2014 . https://doi.org/10.1109/GLOCOMW.2014.7063445
GLOBECOM Workshops
GLOBECOM Workshops
Massive MIMO is a new technique for wireless communications that claims to offer very high system throughput and energy efficiency in multi-user scenarios. The cost is to add a very large number of antennas at the base station. Theoretical research h
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35e46345a4e4f9876ed57bc6309c3b81
https://vbn.aau.dk/da/publications/d63db45b-2eac-418c-82d5-0348ee50fd9f
https://vbn.aau.dk/da/publications/d63db45b-2eac-418c-82d5-0348ee50fd9f
Publikováno v:
Oliveras Martínez, À, De Carvalho, E, Popovski, P & Pedersen, G F 2014, Energy detection using very large antenna array receivers . in 48th Asilomar Conference on Signals, Systems, and Computers proceedings . IEEE Signal Processing Society, Asilomar Conference on Signals, Systems and Computers. Conference Record, pp. 1034-1038, 2014 48th Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, United States, 02/11/2014 . https://doi.org/10.1109/ACSSC.2014.7094611
ACSSC
ACSSC
We propose the use of energy detection for single stream transmission and reception by a very large number of antennas, with primary application to millimeter wave communications. The reason for applying energy detection is low complexity, cost and p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22fcdd6682b25bba210d0321e86d0423
https://vbn.aau.dk/da/publications/311024cd-7121-4a23-9ead-41405c9402db
https://vbn.aau.dk/da/publications/311024cd-7121-4a23-9ead-41405c9402db