Temat: PAPR reduction - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A Simple Nonlinear Companding Transfrom for Nonlinear Compensation of Direct-Detection Optical OFDM Systems
Autorzy:: Ngo, Trang T.
Nguyen, Nhan D.
Powiązania:: https://bibliotekanauki.pl/articles/227015.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: nonlinear compensation
companding transform
DCO-OFDM
PAPR reduction
direct detection
Opis:: In direct-detection OFDM systems, the nonlinear effects caused by optical modulation and fiber transmission can degrade the system performance severely. In this study, we propose a new nonlinear companding transform to improve the performance of direct detection optical OFDM transmission systems. The demonstration is realized by Monte-Carlo simulation of the intensity modulation and direct detection DCO-OFDM optical transmission system at 40 Gbps over a 80 km of standard single mode fiber link. The influence of the companding parameters on the performance of system in different nonlinear transmission conditions has been investigated via simulation.
Źródło:: International Journal of Electronics and Telecommunications; 2020, 66, 3; 515-520
2300-1933
Pojawia się w:: International Journal of Electronics and Telecommunications
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Interleaving Technique Implementation to Reduce PAPR of OFDM Signal in Presence of Nonlinear Ampliﬁcation with Memory Eﬀects
Autorzy:: Aimer, Y.
Bouazza, B. S.
Bachir, S.
Duvanaud, C.
Powiązania:: https://bibliotekanauki.pl/articles/309197.pdf
Data publikacji:: 2018
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: downward compatibility
interleaving technique
interleaver key
OFDM systems
PAPR reduction
Opis:: In OFDM systems, peak-to-average power ratio (PAPR) reduction of the signal is one of the main challenges that need to be overcome in order to use the transmitter in an eﬃcient manner. As one of attractive techniques, interleaving can be used in PAPR reduction for multicarrier signals without spectrum distortion. In this paper, the authors propose to extend the possibilities of interleaving to improve PAPR reduction, to use a new coding of interleaver keys at the transmitter and a robust decoding procedure at the receiver. In order not to degrade the data rate, the use of null subcarriers to transmit side information to the receiver is proposed and evaluated. Simulation results in the context of the WLAN 802.11a standard in the presence of a nonlinear power ampliﬁer model with memory, show a reduction of PAPR of approximately 5.2 dB, and an improvement of bit error rate and error vector magnitude of about 2 decades and 4% respectively, while respecting the spectral mask speciﬁcation.
Źródło:: Journal of Telecommunications and Information Technology; 2018, 3; 14-22
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "PAPR reduction" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język