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Wyszukujesz frazę "reservation" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Algorithm Based New Tone Reservation Method for Mitigating PAPR in OFDM Systems
Autorzy:
Saha, S.
Chakrabarty, S.
Bhattacharjee, S.
Sil, S.
Powiązania:
https://bibliotekanauki.pl/articles/963815.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
BER
CCDF
OFDM
PAPR
tone reservation algorithm
Opis:
There are abundant methods to mitigate PAPR in OFDM signals among which algorithm based tone reservation is of great popularity owing to its low complexity as well as decent BER. Here we have put forward a new distinct algorithm based Tone Reservation technique which is not only less complex and calculates its own threshold as well as PRT signal (unlike other algorithms requiring predetermined threshold and PRT) but also aptly modifies the data by bit by bit comparison with a modified copy of itself (algorithm modified) thus scaling the peaks as and providing a decent BER and good PAPR reduction.
Źródło:
International Journal of Electronics and Telecommunications; 2017, 63, 3; 293-298
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Performance metrics in OFDM wireless networks supporting quasi-random traffic
Autorzy:
Panagoulias, P.
Moscholios, I.
Sarigiannidis, P.
Piechowiak, M.
Logothetis, M.
Powiązania:
https://bibliotekanauki.pl/articles/200360.pdf
Data publikacji:
2020
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
congestion
quasi random
OFDM
reservation
loss model
recursive
Opis:
We consider the downlink of an orthogonal frequency division multiplexing (OFDM) based cell that accommodates calls from different service-classes with different resource requirements. We assume that calls arrive in the cell according to a quasi-random process, i.e., calls are generated by a finite number of sources. To calculate the most important performance metrics in this OFDM-based cell, i.e., congestion probabilities and resource utilization, we model it as a multirate loss model, show that the steady-state probabilities have a product form solution (PFS) and propose recursive formulas which reduce the complexity of the calculations. In addition, we study the bandwidth reservation (BR) policy which can be used in order to reserve subcarriers in favor of calls with high subcarrier requirements. The existence of the BR policy destroys the PFS of the steady-state probabilities. However, it is shown that there are recursive formulas for the determination of the various performance measures. The accuracy of the proposed formulas is verified via simulation and found to be satisfactory.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2020, 68, 2; 215-223
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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