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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Interplay of Probabilistic Shaping and the Blind Phase Search Algorithm

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Autor(es):
Mello, Darli A. A. [1] ; Barbosa, Fabio Aparecido [1] ; Reis, Jacklyn Dias [2]
Número total de Autores: 3
Afiliação do(s) autor(es):
[1] Univ Estadual Campinas, Sch Elect & Comp Engn, BR-13083970 Campinas, SP - Brazil
[2] Idea Elect Syst, BR-13080650 Campinas, SP - Brazil
Número total de Afiliações: 2
Tipo de documento: Artigo Científico
Fonte: Journal of Lightwave Technology; v. 36, n. 22, p. 5096-5105, NOV 15 2018.
Citações Web of Science: 3
Resumo

Probabilistic shaping (PS) is a promising technique to approach the Shannon limit using a typical constellation geometries. However, the impact of PS on the chain of signal processing algorithms of a coherent receiver still needs further investigation. In this paper, we study the interplay of PS and phase recovery using the blind phase search (BPS) algorithm, which is widely used in optical communications systems. We first investigate a supervised phase search (SPS) algorithm as a theoretical upper bound on the BPS performance, assuming perfect decisions. It is shown that PS influences the SPS algorithm, but its impact can be alleviated by moderate noise rejection window sizes. On the other hand, BPS is affected by PS even for long windows because of correlated erroneous decisions in the phase recovery scheme. The simulation results also show that the capacity-maximizing shaping is near to the BPS worst-case situation for square-QAM constellations, causing potential implementation penalties. (AU)

Processo FAPESP: 15/24341-7 - Novas estratégias para enfrentar a ameaça de exaustão da capacidade
Beneficiário:Helio Waldman
Linha de fomento: Auxílio à Pesquisa - Temático
Processo FAPESP: 15/24517-8 - Fotônica para internet de nova geração
Beneficiário:Hugo Enrique Hernández Figueroa
Linha de fomento: Auxílio à Pesquisa - Temático