Zobrazeno 1 - 10
of 1 869
pro vyhledávání: '"Cdma systems"'
Publikováno v:
Journal of Telecommunications and Information Technology, Iss 2 (2023)
This paper describes two blind algorithms for multicarrier code division multiple access (MC-CDMA) system equalization. In order to identify, blindly, the impulse response of two practical selective frequency fading channels called broadband radio ac
Externí odkaz:
https://doaj.org/article/cc22600cf7a943b0ab8c1132a6000783
Akademický článek
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Autor:
Stevan M. Berber
Publikováno v:
Vojnotehnički Glasnik, Vol 64, Iss 2, Pp 353-382 (2016)
Multiuser communication techniques are used in modern wireless networks like cellular and wireless sensor networks. The design of the physical layer for these networks was based on the application of binary spreading sequences and a correlation recei
Externí odkaz:
https://doaj.org/article/ab833b1f37924dc8b4de863e66a0324d
Publikováno v:
Journal of Telecommunications and Information Technology, Iss 1 (2017)
In this paper the performance of a partial combining equalizer for Multi-Carrier Code Division Multiple Access (MC-CDMA) systems is analytically and numerically evaluated. In the part of channel identification, authors propose a blind algorithm based
Externí odkaz:
https://doaj.org/article/cef00a3318cb489eb4fcdddb418ce374
Autor:
Stevan M. Berber
Publikováno v:
Vojnotehnički Glasnik, Vol 62, Iss 3, Pp 37-58 (2014)
Chaotic spreading sequences can increase secrecy and resistance to interception in signal transmission. Chaos-based CDMA systems have been well investigated in the case of flat fading and noise presence in the channel. However, these systems operatin
Externí odkaz:
https://doaj.org/article/90fe4b73c18e483ba0408d49d41becc2
Publikováno v:
Semina: Ciências Exatas e Tecnológicas, Vol 35, Iss 1, Pp 63-76 (2014)
This work explores the heuristic optimization algorithm based on ant colonies (ACO), deployed on complex optimization problems, aiming to achieve an iterative and feasible method which is able to solve NP and NP-Hard problems related to wireless netw
Externí odkaz:
https://doaj.org/article/7a962386c9e7446aa469be21d4b18bc0
Akademický článek
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Publikováno v:
International Journal of Engineering and Advanced Technology. 9:104-111
A Direct-Sequence Code-Division Multiple-Access (DS-CDMA) with rake receiver for multiuser system sets up a new dimension in mobile communication system. We propose a pseudo convex framework using an optimum sparse channel estimation technique for DS
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ce2732c650343c0162ac66f77bdaceec
https://doi.org/10.35940/ijeat.d9066.069520
https://doi.org/10.35940/ijeat.d9066.069520
Autor:
Masoumeh Nasiri Kenari
Publikováno v:
International Journal of Information and Communication Technology Research, Vol 1, Iss 2, Pp 29-38 (2009)
In this paper, we introduce two techniques, recently proposed in (1-2], for combination of coding and spread spectrum modulation in wideband Code Division Multiple Access (CDMA) systems. These coding schemes, named as an internal coding, do not requi
Externí odkaz:
https://doaj.org/article/361016ee2a9b4aabba270c53cb40a2e7
Autor:
Bai, Z. D., Silverstein, Jack W.
Publikováno v:
The Annals of Applied Probability, 2007 Feb 01. 17(1), 81-101.
Externí odkaz:
https://www.jstor.org/stable/25442837