Temat: BER system - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Oxidative damage to DNA and antioxidant status in aging and age-related diseases
Autorzy:: Olinski, Ryszard
Siomek, Agnieszka
Rozalski, Rafal
Gackowski, Daniel
Foksinski, Marek
Guz, Jolanta
Dziaman, Tomasz
Szpila, Anna
Tudek, Barbara
Powiązania:: https://bibliotekanauki.pl/articles/1041102.pdf
Data publikacji:: 2007
Wydawca:: Polskie Towarzystwo Biochemiczne
Tematy:: ROS
aging
oxidative DNA damage
age-related diseases
BER
GO system
Opis:: Aging is a complex process involving morphologic and biochemical changes in single cells and in the whole organism. One of the most popular explanations of how aging occurs at the molecular level is the oxidative stress hypothesis. Oxidative stress leads in many cases to an age-dependent increase in the cellular level of oxidatively modified macromolecules including DNA, and it is this increase which has been linked to various pathological conditions, such as aging, carcinogenesis, neurodegenerative and cardiovascular diseases. It is, however, possible that a number of short-comings associated with gaps in our knowledge may be responsible for the failure to produce definite results when applied to understanding the role of DNA damage in aging and age-related diseases.
Źródło:: Acta Biochimica Polonica; 2007, 54, 1; 11-26
0001-527X
Pojawia się w:: Acta Biochimica Polonica
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Using Least Mean p-Power Algorithm to Correct Channel Distortion in MC-CDMA Systems
Autorzy:: Zidane, M.
Safi, S.
Sabri, M.
Frikel, M.
Powiązania:: https://bibliotekanauki.pl/articles/308275.pdf
Data publikacji:: 2018
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: adaptive equalization
adaptive identification
BER
BRAN C
LMP
MC-CDMA system
ZF
Opis:: This work focuses on adaptive Broadband Radio Access Network (BRAN) channel identiﬁcation and on downlink Multi-Carrier Code Division Multiple Access (MCCDMA) equalization. We use the normalized BRAN C channel model for 4G mobile communications, distinguishing between indoor and outdoor scenarios. On the one hand, BRAN C channel parameters are identiﬁed using the Least Mean p-Power (LMP) algorithm. On the other, we consider these coeﬃcients in the context of adaptive equalization. We provide an overview and a mathematic formulation of MC-CDMA systems. According to these fundamental concepts, the equalizer technique is investigated analytically to compensate for channel distortion in terms of the bit error rate (BER). The numerical simulation results, for various signal-to-noise ratios and diﬀerent p threshold, show that the presented algorithm is able to simulate the BRAN C channel measured with different accuracy levels. Furthermore, as far as the adaptive equalization problem is concerned, the results obtained using the zero-forcing equalizer demonstrate that the algorithm is adequate for some particular cases of threshold p.
Źródło:: Journal of Telecommunications and Information Technology; 2018, 3; 23-30
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

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