Zobrazeno 1 - 10
of 33
pro vyhledávání: '"Dimas Mavares"'
Publikováno v:
Annals of Telecommunications. 77:677-688
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::571606c0ce20674fcb77ffe8c817a233
https://doi.org/10.1007/s12243-021-00900-9
https://doi.org/10.1007/s12243-021-00900-9
Publikováno v:
Annals of Telecommunications. 75:59-66
In this paper, the space-time code selection technique for multiple-inputs single-output systems is optimized using particle swarm optimization. We considered both variable-rate and constant-rate strategies. For a variable-rate technique, we address
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d36109ea496a35e17b1702bde0c9ae34
https://doi.org/10.1007/s12243-019-00734-6
https://doi.org/10.1007/s12243-019-00734-6
Publikováno v:
2015 Asia-Pacific Conference on Computer Aided System Engineering.
A channel prediction based space-time code selection technique for multiple input-single output systems is proposed. This transmit antenna diversity technique selects both the space-time code and the number of transmitter antennas using estimated and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b3f1e8a9752e4260959db0301b419112
https://doi.org/10.1109/apcase.2015.55
https://doi.org/10.1109/apcase.2015.55
Publikováno v:
Scopus-Elsevier
This paper presents the measurement and statistical analysis of the temporal variations of the radio channel defined by a fixed link at 3.5 GHz in suburban areas. The analysis provides the required information about the temporal stability of the chan
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bebd0a466f8885ef72bbfe53a455d19a
https://doi.org/10.1007/s11277-006-1320-z
https://doi.org/10.1007/s11277-006-1320-z
Autor:
Dimas Mavares, Rafael P. Torres
Publikováno v:
2006 Proceedings of the First Mobile Computing and Wireless Communication International Conference.
In this paper a space-time code selection approach for transmit antenna diversity systems is proposed. The receiver compares the equivalent SISO channel envelopes with a set of predetermined threshold levels, decides on the antennas to be used and se
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd5d116647754cca22a691cdbbf8784e
https://doi.org/10.1109/mcwc.2006.4375201
https://doi.org/10.1109/mcwc.2006.4375201
Autor:
Rafael P. Torres, Dimas Mavares
Publikováno v:
ISWCS
A simple space-time code selection scheme for TAD-OFDM systems is proposed. The space-time code for transmission is selected by comparing the equivalent SISO channels with a set of predetermined threshold levels. A threshold level search procedure ba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b6fc689197e22293c917577e59fca886
https://doi.org/10.1109/iswcs.2006.4362342
https://doi.org/10.1109/iswcs.2006.4362342
Autor:
Dimas Mavares, Rafael P. Torres
Publikováno v:
5th European Personal Mobile Communications Conference 2003.
This paper shows analytically and through bit error rate (BER) simulations that both the G/sub 2/ space-time block (STB) and the maximal ratio receive combining (MRRC) systems suffer a BER performance degradation as a consequence of channel estimatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f4262191711c3b94c99d958c7fbf62e7
https://doi.org/10.1049/cp:20030271
https://doi.org/10.1049/cp:20030271
Channel estimation error effects on the performance of STB codes in flat frequency rayleigh channels
Autor:
Rafael P. Torres, Dimas Mavares
Publikováno v:
Scopus-Elsevier
The paper presents expressions for the received signals for rate 1, 1/2 and 3/4 space-time block codes in the presence of channel estimation errors and over mutually correlated flat frequency Rayleigh fading channels. It is shown analytically and thr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46338848b2a2e5cc58e79e7e3239319e
http://www.scopus.com/inward/record.url?eid=2-s2.0-4143099224&partnerID=MN8TOARS
http://www.scopus.com/inward/record.url?eid=2-s2.0-4143099224&partnerID=MN8TOARS
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Publikováno v:
Annals of Telecommunications; Oct2022, Vol. 77 Issue 9/10, p677-688, 12p