Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Bruhtesfa Godana"'
Autor:
Bruhtesfa Godana, Torbjorn Ekman
Publikováno v:
IEEE Transactions on Wireless Communications. 12:5172-5184
Parametrization of unitary matrices using Givens rotations has been used for limited feedback in multiple-input multiple-output (MIMO) systems. Feedback based on these rotations has been adopted in IEEE 802.11n and other upcoming standards. However,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce1ccd9e72aaa2ff069d25168f4fa1bd
https://doi.org/10.1109/twc.2013.092013.130045
https://doi.org/10.1109/twc.2013.092013.130045
Publikováno v:
IEEE Transactions on Wireless Communications. 12:3533-3543
In downlink multi-user MIMO systems, Block Diagonalization (BD) is a well known linear precoding scheme that eliminates inter-user interference. However, BD requires precoded pilot symbols or feed-forwarding to coordinate precoder information from ba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::801e94679bbe6a7f1013543350306f0f
https://doi.org/10.1109/twc.2013.062713.121865
https://doi.org/10.1109/twc.2013.062713.121865
Autor:
Amitav Mukherjee, Sorour Falahati, Yang Yu, Laetitia Falconetti, Anders Furuskär, Bruhtesfa Godana, Havish Koorapaty, Jung-Fu Cheng, Daniel Larsson, Du Ho Kang
Publikováno v:
ICC Workshops
Licensed-assisted access (LAA) is a new operation mode of Long-Term Evolution (LTE) in the unlicensed spectrum currently under study in the 3GPP standardization forum. In order to coexist with Wi-Fi, some of the new functionalities required of LAA LT
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::383437e6e1dd9861a6ab579131f7de4e
https://doi.org/10.1109/iccw.2015.7247532
https://doi.org/10.1109/iccw.2015.7247532
Publikováno v:
UKSim
Compressive sensing (CS) is a new methodology to capture signals at lower rate than the Nyquist sampling rate when the signals are sparse or sparse in some domain. Studying the performance of such novel paradigm is an interesting subject. In this pap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::92aac435fff69607ca39ba83562f17e3
https://doi.org/10.1109/uksim.2015.16
https://doi.org/10.1109/uksim.2015.16
Autor:
David Gesbert, Bruhtesfa Godana
Publikováno v:
PIMRC
Coordinated beamforming is an important technique for dealing with interference channels arising in multicell systems. However, the performance of coordinated beamforming suffers significantly from Channel State Information (CSI) feedback delay and b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::335e8717b545f1b07d06623a48a461b0
https://doi.org/10.1109/pimrc.2013.6666229
https://doi.org/10.1109/pimrc.2013.6666229
Autor:
Bruhtesfa Godana, Torbjorn Ekman
Publikováno v:
PIMRC
The performance of multiple-input multiple-output (MIMO) systems can be enhanced with the availability of channel direction information at the transmitter. One of the known techniques to feedback channel direction (eigenvector) information is paramet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e48f86a2039406aeaabc7a3a10cdfeb
https://doi.org/10.1109/pimrc.2013.6666327
https://doi.org/10.1109/pimrc.2013.6666327
Autor:
Bruhtesfa Godana, Torbjorn Ekman
Publikováno v:
VTC Spring
In multi-user MIMO systems, coordinated beam- forming can be used to relax the dimensional constraint of block diagonalization and accommodate more users. However, coor- dinated beamforming and other similar beamforming schemes require coordination o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::421b5c4254befce0f9a8f1a30ea83c88
https://doi.org/10.1109/vtcspring.2013.6692721
https://doi.org/10.1109/vtcspring.2013.6692721
Publikováno v:
ITW
We consider the total capacity of a Gaussian multiple-access MIMO channel with a linear array of R receive antennas and T distributed transmit antennas. If the spatial distribution of transmit antennas weighed by their path loss and marginalized to a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa8c9b7fe8d18bba009b88a7cf20c4a2
https://doi.org/10.1109/itw.2012.6404701
https://doi.org/10.1109/itw.2012.6404701
Publikováno v:
VTC Fall
The sum capacity of a broadcast MIMO channel can be achieved sub-optimally using linear precoding techniques. Block diagonalization (BD) is a linear precoding technique that achieves near to the sum capacity with low complexity by nullifying the inte
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd6c3eb389a76b87f324ba9bf9118dba
https://doi.org/10.1109/vtcfall.2012.6399135
https://doi.org/10.1109/vtcfall.2012.6399135
Autor:
Bruhtesfa Godana, Torbjorn Ekman
Publikováno v:
IWCMC
MIMO systems benefit from spatial multiplexing when channel state information (CSI) is available at the transmitter. Givens decomposition of unitary matrices can be used to feedback the eigenvectors of the channel in an efficient way. Several Givens
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8951079fe04c5523b81eec7a4dfb6721
https://doi.org/10.1109/iwcmc.2011.5982520
https://doi.org/10.1109/iwcmc.2011.5982520