Zobrazeno 1 - 10
of 71
pro vyhledávání: '"S. Papaharalabos"'
Autor:
S. Papaharalabos, Fotis Lazarakis
Publikováno v:
IEEE Communications Letters. 19:2074-2077
The problem of how to approximate effectively the box-plus operation used in sum-product algorithm (SPA) decoding of low-density parity-check (LDPC) codes has been widely investigated over the past years of research. This letter deals, for the first
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6e8de447d0eed58e42e2fea78ac91c20
https://doi.org/10.1109/lcomm.2015.2492965
https://doi.org/10.1109/lcomm.2015.2492965
Publikováno v:
China Communications. 12:59-72
In this paper, we study the advantages of cooperation in broadcasting systems from a geosynchronous earth orbit (GEO) satellite to mobile terminals (MTs), achieved through a terrestrial complementary ground station (CGS) with fixed installment, which
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a4ffaf4b67e799705866ae013e345601
https://doi.org/10.1109/cc.2015.7122481
https://doi.org/10.1109/cc.2015.7122481
Publikováno v:
International Journal of Satellite Communications and Networking. 32:63-92
This paper presents a feasibility study for a fixed broadband access High Throughput Satellite terabit/second system by considering appropriate state‐of‐the‐art communication technologies. For the investigated system model, DVB‐S2 and DVB‐R
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6daf1839053aed167f6e05daa5bcae0f
https://doi.org/10.1002/sat.1067
https://doi.org/10.1002/sat.1067
Publikováno v:
Wireless Personal Communications. 69:373-386
A novel method for approximating the optimal max* operator used in Log- MAP decoding of turbo and turbo trellis-coded modulation (TTCM) codes is proposed being derived from a well-known inequality, which has not been published before. The max* operat
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e65b31a4141947c419c0d4a2108feb91
https://doi.org/10.1007/s11277-012-0578-6
https://doi.org/10.1007/s11277-012-0578-6
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 61:888-895
In this paper, we deal with practical implementation issues of the max* operation in generalized form used for decoding of both turbo and low-density-parity-check (LDPC) codes. In particular, first, a unified framework for the so-called generalized m
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3b80fddfa849776222ce480f446632a
https://doi.org/10.1109/tim.2011.2173045
https://doi.org/10.1109/tim.2011.2173045
Autor:
Georgia Tsiropoula, P. Takis Mathiopoulos, S. Papaharalabos, Philip Constantinou, David Benmayor
Publikováno v:
Wireless Personal Communications. 60:695-708
A low-complexity algorithm for the design of efficiently-encodable rate-compatible (RC) low-density parity-check (LDPC) codes by deterministically extending an irregular repeat-accumulate (IRA) is introduced. The extending structure is based on circu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b1e55db7dc98c49dcadedc266834970
https://doi.org/10.1007/s11277-010-9969-8
https://doi.org/10.1007/s11277-010-9969-8
Publikováno v:
IEEE Transactions on Vehicular Technology. 58:4955-4961
Three non-data-aided signal-to-noise ratio (SNR) estimator techniques are derived and compared for turbo decoding, in conjunction with block-coded binary-phase-shift-keying (BPSK) signals received over fully interleaved (i.e., uncorrelated) Rayleigh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c397d89be4272cb1578cb576533373f
https://doi.org/10.1109/tvt.2009.2025593
https://doi.org/10.1109/tvt.2009.2025593
Autor:
Kostas Dangakis, Antonis A. Alexandridis, A. Michalopoulou, Eleftherios Koxias, S. Papaharalabos, Panayotis G. Cottis, Fotis Lazarakis
Publikováno v:
Panhellenic Conference on Informatics
Several cooperative transmission techniques have been studied in previous research works but very few of them have considered the trade-off between diversity gain and energy efficiency, which is important in cases, such as wireless sensor networks. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e3f70d9032aaaa2a57fecef9953ea48
https://doi.org/10.1145/2801948.2802007
https://doi.org/10.1145/2801948.2802007
Autor:
Gianni Albertazzi, Harald Ernst, Gianluigi Liva, Giovanni Emanuele Corazza, Alban Duverdier, S. Papaharalabos, Wilfried Gappmair, Marco Chiani
Publikováno v:
Digital Satellite Communications ISBN: 9780387256344
Digital Satellite Communications focuses on the study and design of efficient and flexible physical layers for broadband mobile and fixed satellite links. The chapters address long-term developments for advanced physical layer techniques in broadband
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fab1d124c3d82fdf49ae01f84e41606a
http://hdl.handle.net/11585/54303
http://hdl.handle.net/11585/54303
Publikováno v:
IEEE Communications Letters. 13:522-524
Motivated by a recently published robust geometric programming approximation, a generalized approach for approximating efficiently the max* operator is presented. Using this approach, the max* operator is approximated by means of a generic and yet ve
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b7990bbf8ac7833c5035f6e1c2ceadd
https://doi.org/10.1109/lcomm.2009.090537
https://doi.org/10.1109/lcomm.2009.090537