Zobrazeno 1 - 10
of 20
pro vyhledávání: '"Rachata Maneekut"'
Publikováno v:
IEEE Access, Vol 12, Pp 142181-142193 (2024)
This paper presents an all-optical time-extended optical code division multiplexing (TE-OCDM) system using two different optical en/decoders (E/Ds). The proposed system configuration alleviates the rigorous requirement for transmitter specifications
Externí odkaz:
https://doaj.org/article/2bd991c79b0449e48215ed40ce69d98c
Publikováno v:
IEEE Access, Vol 12, Pp 34656-34667 (2024)
This paper explores, through the utilization of analytical models and simulations, the bit error rate (BER) of 400GBASE-LR8/ER8 in back-to-back configuration, considering various extinction ratio (ER) values and photodetector types. Simulation of tra
Externí odkaz:
https://doaj.org/article/4295adef6b3940009636b83637f38e48
Autor:
Rachata Maneekut, Pasu Kaewplung
Publikováno v:
IEEE Access, Vol 10, Pp 114414-114423 (2022)
This paper proposes an optimized 16-chip multi-level phase-shifted optical code division multiplexing (OCDM) en/decoder for 4-level pulse amplitude modulation (PAM-4) format by using an amplitude-shaping (AS) technique. The optimized en/decoder can e
Externí odkaz:
https://doaj.org/article/036c619d8b2341fb8e2d8b978aca5004
Autor:
Rachata Maneekut, Pasu Kaewplung
Publikováno v:
IEEE Access, Vol 6, Pp 50096-50104 (2018)
We propose an amplitude-shaping (AS) technique to shape an en/decoded signal in 10-Gb/s coherent time-spreading optical-code division multiplexing (OCDM) with ON– OFF keying modulation format, using 16-chip multi-level phase-shifted keying en/decod
Externí odkaz:
https://doaj.org/article/16e87fbcb3ab47f78b0b37b4137c0b39
Autor:
Yuta Wakayama, Daniel J. Elson, Vitaly Mikhailov, Rachata Maneekut, Jiawei Luo, Noboru Yoshikane, Daryl Inniss, Takehiro Tsuritani
Publikováno v:
Journal of Lightwave Technology. :1-8
Autor:
Noboru Yoshikane, Yuta Wakayama, Hidenori Takahashi, Daniel J. Elson, Takehiro Tsuritani, Shohei Beppu, Rachata Maneekut
Publikováno v:
2022 24th International Conference on Advanced Communication Technology (ICACT).
We propose the optimized HPGS-64QAM constellations for hard decision decoding and experimentally verify the performance with optical fiber transmission. The proposed HPGS-64QAM constellations outperform the regular PS-64QAM in all ranges of entropy.
Autor:
Noboru Yoshikane, Vitaly Mikhailov, Daryl Inniss, Daniel S. Elson, Yuta Wakayama, Takehiro Tsuritani, Filippos Balasis, Rachata Maneekut, Jiawei Luo, Cen Wang
Publikováno v:
ECOC
Publikováno v:
OFC
An accelerator unit in conjunction with generalized pairwise optimization can obtain optimum geometric shaped 64QAM constellations up to 60% faster. Shaping gain and transmission distance are improved over just GPO constellations in low-to-middle SNR
Publikováno v:
2020 Opto-Electronics and Communications Conference (OECC).
This paper shows the use of MAP detection in-cooperating with the hybrid probabilistic geometric shaping (HPGS) in the optical long-haul fiber transmission. By computer simulation, the MAP detection over HPGS-64-QAM has a better system performance th
Publikováno v:
2020 8th International Electrical Engineering Congress (iEECON).
In this paper, we show the self-detected threshold amplitude algorithm of the MAP detection without prior knowledge of the probability of each constellation point. The computer simulation confirms that the proposed MAP detection has a better performa