Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Haralabos Papadopoulos"'
Publikováno v:
VTC Spring
In this paper, we develop and evaluate compressed representations of the channels between a massive MIMO base station and user terminals that can serve as attractive proxies in the context of various applications of interest. To create such compresse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cabb379488bc1f9ec672bef93ae4ecfc
https://doi.org/10.1109/vtc2021-spring51267.2021.9449067
https://doi.org/10.1109/vtc2021-spring51267.2021.9449067
Publikováno v:
ITA
We investigate non-orthogonal uplink pilot designs for improving the area spectral efficiency in the downlink of TDD reciprocity-based massive MIMO cellular networks. In particular, we develop a class of pilot designs that are locally orthogonal with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::14631b9f2d440eeba1262dd719cf0991
https://doi.org/10.1109/ita50056.2020.9244985
https://doi.org/10.1109/ita50056.2020.9244985
Publikováno v:
IEEE Transactions on Wireless Communications. 15:8537-8550
Many practical communication systems have some form of restricted precoding or postcoding, such as antenna selection, selection combining, beam selection, and limited feedback precoding, to name a few. The capacity analysis of such systems is, in gen
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::72f1036f5655b529e9b6be4944b02860
https://doi.org/10.1109/twc.2016.2616337
https://doi.org/10.1109/twc.2016.2616337
Publikováno v:
ICC
Gains in area spectral efficiency have been recently demonstrated in networks of large-antenna arrays by means of fog massive MIMO operation and virtual sector-based processing. In this paper, we adopt such sector-based processing and operation to lo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5c402670fd63fa4df6bec2867c556b35
https://doi.org/10.1109/icc.2019.8761452
https://doi.org/10.1109/icc.2019.8761452
Publikováno v:
IEICE Transactions on Communications. :602-621
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6465466c98a5ae10a76b4416dea902ec
https://doi.org/10.1587/transcom.2015ebi0002
https://doi.org/10.1587/transcom.2015ebi0002
Autor:
Giuseppe Caire, Chenwei Wang, Haralabos Papadopoulos, Ozgun Y. Bursalioglu, Ratheesh K. Mungara
Publikováno v:
ISIT
This paper considers a new architecture underpinned by on-the-fly pilot contamination control, termed Fog massive MIMO, where the users are able to establish high-throughput and low-latency data links in a seamless and opportunistic manner, as they t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13357070c553f0ac301c08533e037512
https://doi.org/10.1109/isit.2018.8437539
https://doi.org/10.1109/isit.2018.8437539
Publikováno v:
ICC
In this paper we consider a densely deployed phantom cell system providing a low latency network for massive connectivity. Non-orthogonal pilot designs serve as a promising solution to support a large number of users but fast collision detection at t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::30f43c8ae44bd9f8b1700565095513f3
https://doi.org/10.1109/icc.2018.8422533
https://doi.org/10.1109/icc.2018.8422533
Publikováno v:
ICC
The overheads associated with feedback-based channel acquisition can greatly compromise the achievable rates of FDD based massive MIMO systems. Indeed, downlink (DL) training and uplink (UL) feedback overheads scale linearly with the number of base s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::236eb42db91f7665724ce3831bc68f46
http://arxiv.org/abs/1802.01014
http://arxiv.org/abs/1802.01014
Publikováno v:
ICC
We propose a novel scheme for estimating the large-scale gains of the channels between user terminals (UTs) and base stations (BSs) in a cellular system. The scheme leverages TDD operation, uplink (UL) training by means of properly designed non-ortho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d982de9cc170f250fd8365fad50a78a6
Publikováno v:
ICC
We investigate the viability of using machine-learning techniques for estimating user-channel features at a large-array base station (BS). In the scenario we consider, user-pilot broadcasts are observed and processed by the BS to extract angle-of-arr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4282a20759848958c9eca16b525c526b