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Träfflista för sökning "(LAR1:cth) pers:(Karlsson Magnus 1967) pers:(Yoshida Tsuyoshi 1982) srt2:(2021)"

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Numrering	Referens	Omslagsbild	Hitta
1.	Yoshida, Tsuyoshi, 1982, et al. (författare) Compressed Shaping: Concept and FPGA Demonstration 2021 Ingår i: Journal of Lightwave Technology. - 0733-8724 .- 1558-2213. ; 39:17, s. 5412-5422 Tidskriftsartikel (refereegranskat)abstract Probabilistic shaping (PS) has been widely studied and applied to optical fiber communications. The encoder of PS expends the number of bit slots and controls the probability distribution of channel input symbols. Not only studies focused on PS but also most works on optical fiber communications have assumed source uniformity (i.e. equal probability of marks and spaces) so far. On the other hand, the source information is in general nonuniform, unless bit-scrambling or other source coding techniques to balance the bit probability is performed. Interestingly, one can exploit the source nonuniformity to reduce the entropy of the channel input symbols with the PS encoder, which leads to smaller required signal-to-noise ratio at a given input logic rate. This benefit is equivalent to a combination of data compression and PS, and thus we call this technique compressed shaping. In this work, we explain its theoretical background in detail, and verify the concept by both numerical simulation and a field programmable gate array (FPGA) implementation of such a system. In particular, we find that compressed shaping can reduce power consumption in forward error correction decoding by up to 90% in nonuniform source cases. The additional hardware resources required for compressed shaping are not significant compared with forward error correction coding, and an error insertion test is successfully demonstrated with the FPGA.
2.	Yoshida, Tsuyoshi, 1982, et al. (författare) FPGA Implementation of Hierarchical Subcarrier Rate and Distribution Matching for up to 1.032 Tb/s or 262144-QAM 2021 Ingår i: 2021 Optical Fiber Communications Conference and Exhibition, OFC 2021 - Proceedings. Konferensbidrag (refereegranskat)abstract A novel hierarchical subcarrier rate and distribution matching has been implemented in an FPGA at 1.032 Tb/s. The implemented subsystem achieves seamless data flow among subcarriers at a resolution < 0.01 bit per channel use.

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Typ av publikation: konferensbidrag (1); tidskriftsartikel (1)

Typ av innehåll: refereegranskat (2)

Författare/redaktör: Agrell, Erik, 1965 (2); Karlsson, Magnus, 19 ... (2); Yoshida, Tsuyoshi, 1 ... (2); Igarashi, Koji (2); Konishi, Yoshiaki (1)

Lärosäte: Chalmers tekniska högskola (2)

Språk: Engelska (2)

Forskningsämne (UKÄ/SCB): Teknik (2); Naturvetenskap (1)

År: 2021 (2)Ta bort avgränsningen

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