Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Johan Lofgren"'
Publikováno v:
IEEE Transactions on Circuits and Systems I: Regular Papers. 61:226-237
An implementation of a reduced complexity matching pursuit channel estimator for LTE is presented. The design contains an FFT/IFFT module with non-radix-2 units and a core estimator. The module is flexible enough to perform FFT and IFFT at different
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bace5acf41bebae7b323bba034a9ca8b
https://doi.org/10.1109/tcsi.2013.2264695
https://doi.org/10.1109/tcsi.2013.2264695
Publikováno v:
IEEE Transactions on Very Large Scale Integration (VLSI) Systems. 21:2262-2273
This paper presents a multimode soft-output multiple-input multiple-output (MIMO) signal detector that is efficient in hardware cost and energy consumption. The detector is capable of dealing with spatial-multiplexing (SM), space-division-multiple-ac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8f552725f31bb504afd323019ed88029
https://doi.org/10.1109/tvlsi.2012.2231706
https://doi.org/10.1109/tvlsi.2012.2231706
Publikováno v:
IEEE Transactions on Circuits and Systems I: Regular Papers. 59:2085-2096
This paper presents a low-complexity, high-throughput, and configurable multiple-input multiple-output (MIMO) signal detector design solution targeting the emerging Long-Term-Evolution-Advanced (LTE-A) downlink. The detector supports signal detection
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::13baa89aa8536f144377a5e89e9be036
https://doi.org/10.1109/tcsi.2012.2185297
https://doi.org/10.1109/tcsi.2012.2185297
Publikováno v:
IEEE Transactions on Vehicular Technology. 61:607-617
Signal detection algorithms providing likelihood information for coded spatial-multiplexing multiple-input-multiple-output (MIMO) wireless communication systems pose a critical design challenge due to their prohibitively high computational complexity
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28c4d9bd454e6dbdbdabf50b0edaba24
https://doi.org/10.1109/tvt.2011.2180408
https://doi.org/10.1109/tvt.2011.2180408
Autor:
Joonas Hirvonen, Johan Löfgren, Michael J. Ramsey-Musolf, Philipp Schicho, Tuomas V. I. Tenkanen
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 7, Pp 1-60 (2022)
Abstract A gauge-invariant framework for computing bubble nucleation rates at finite temperature in the presence of radiative barriers was presented and advocated for model-building and phenomenological studies in an accompanying article [1]. Here, w
Externí odkaz:
https://doaj.org/article/fc2bd0d95502466c9dd175d01daad3dc
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 10, Pp 1-21 (2021)
Abstract A first-order Electroweak Phase Transition (EWPT) could explain the observed baryon-antibaryon asymmetry and its dynamics could yield a detectable gravitational wave signature, while the underlying physics would be within the reach of collid
Externí odkaz:
https://doaj.org/article/efd5568b7dc046c68e783b199b06da2f
Publikováno v:
ISCAS
This paper presents an area/energy efficient soft-output MIMO detector that supports the detection of spatial-multiplexing (SM), spatial-diversity (SD), and space-division-multiple-access (SDMA) signals. The developed near-optimal detection algorithm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::34261847598bb57e51f813634dd02896
https://doi.org/10.1109/iscas.2012.6271908
https://doi.org/10.1109/iscas.2012.6271908
Autor:
Johan Lofgren, Peter M. Nilsson
Publikováno v:
NORCHIP
This paper treats the hardware architecture and implementation of mixed radix FFTs with cores of radix 3 and radix 5 in addition to the standard radix 2 core. The implementation flow graphs of the higher radix cores are presented together with a desc
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::95ad567f83b2f6c0fe5236c87eab5add
https://doi.org/10.1109/norchp.2011.6126703
https://doi.org/10.1109/norchp.2011.6126703
Publikováno v:
ISCAS
This paper describes a novel approach to a Matched Pursuit LTE Channel Estimator. It is shown that the total complexity of the estimator can be reduced by, perhaps counter-intuitively, increasing the resolution of the estimator, since for certain cho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad77d86ac3a2d1f3793f4d2c171d551c
http://lup.lub.lu.se/record/1785452
http://lup.lub.lu.se/record/1785452
Autor:
Peter M. Nilsson, Johan Lofgren
Publikováno v:
2010 53rd IEEE International Midwest Symposium on Circuits and Systems.
This paper presents a new and improved bit-serial CORDIC architecture. A detailed description of the bit-serial implementation and its Control Unit is presented. It is shown that the improvement is due to a reduction of registers in the implementatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7621fba83f5eb54b0a3884bc62b03a03
https://doi.org/10.1109/mwscas.2010.5548562
https://doi.org/10.1109/mwscas.2010.5548562