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Side Information-free Low Computational Complexity TDSS-SLM Transmission System
Yushi Shirato,Masahiro Muraguchi 한국통신학회 2021 ICT Express Vol.7 No.4
The authors propose the side information-free low-computational complexity Time Domain Sequence Superposition - Selected Mapping (TDSS-SLM) scheme for PAPR suppression. We adopt IFFT point reduction for transmitter and reception technique using pilot subcarriers for side information estimation. The simulation results show the [R1-1]TDSS-SLM transmitter achieves PAPR reduction of 2.3 dB which corresponds to the 1.5 times larger PAE than that in the conventional transmitter. In addition, the proposed receiver shows loss-less BER performances for both AWGN channel and two types of fading channels, while the computational complexity of the proposed receiver is nearly the same as the conventional OFDM receiver, which is less than 1/10 of the ML receiver.
Design of Low Power All-Optical Networks with Dynamic Lightpath Establishment
Hirata, Kouji,Ito, Kohei,Fukuchi, Yutaka,Muraguchi, Masahiro The Korea Institute of Information and Commucation 2016 Journal of communications and networks Vol.18 No.4
In multifiber all-optical networks, optical amplifiers are used for amplifying multiple optical signals with different wavelengths in fibers. An optical amplifier operates when any of lightpaths passes through it. Therefore, it should simultaneously amplify as many lightpaths as possible for efficiently utilizing its power. This paper proposes a dynamic lightpath establishment scheme considering the use efficiency of the optical amplifiers and the depletion of the wavelength resources in multifiber all-optical networks. The proposed scheme provides a routing and wavelength assignment strategy that reduces both the power consumption of the optical amplifiers and the blocking probability of the lightpath establishment. Through simulation experiments, we demonstrate the effectiveness of the proposed scheme.
Design of Low Power All-Optical Networks with Dynamic Lightpath Establishment
Kouji Hirata,Kohei Ito,Yutaka Fukuchi,Masahiro Muraguchi 한국통신학회 2016 Journal of communications and networks Vol.18 No.4
In multifiber all-optical networks, optical amplifiers areused for amplifying multiple optical signals with different wavelengthsin fibers. An optical amplifier operates when any of lightpathspasses through it. Therefore, it should simultaneously amplifyas many lightpaths as possible for efficiently utilizing itspower. This paper proposes a dynamic lightpath establishmentscheme considering the use efficiency of the optical amplifiers andthe depletion of the wavelength resources in multifiber all-opticalnetworks. The proposed scheme provides a routing and wavelengthassignment strategy that reduces both the power consumption ofthe optical amplifiers and the blocking probability of the lightpathestablishment. Through simulation experiments, we demonstratethe effectiveness of the proposed scheme.