Signal constellation kuumbwa

Zhi Zhang et al. kubva kuSchool of Communication uye Information Engineering, University of Electronic Science and Technology yeChina yakagadzira boka renyeredzi Reshaping chaotic encryption (CSCEn) chirongwa chine nhamba yekuparadzira inodzoreka, sezvinoratidzwa muFIG 2. Chekutanga, orthogonal amplitude modulation (QAM) zviratidzo zvekutevedzana zvakakamurwa. muzvikamu zvakati wandei, uye probabilistic shaping (PS) yakaitwa zvichibva paruzivo rwenhamba (SI) (kuburikidza nekutsiviwa kwenzvimbo yenyeredzi). Zvadaro, kutevedzana kweSI kwakavharidzirwa uye kuvharidzirwa muzvikamu zvechaotic chiratidzo uchishandisa kiyi yekugovera algorithm. SI yakabviswa pamagumo ekugamuchira kuti idzore chiratidzo chepakutanga [2]. Vatsvagiri vakabudirira kufambisa iyo yakavanzika ps-16-qam siginecha pamusoro peyakajairwa single mode fiber (SSMF) ye25km. Nekuti chirongwa ichi hachingogone kuona kuchinjika kutumirwa nekudzika kwakadzika uye kuvandudza mashandiro ekutumira nekugamuchira masaini, asiwo kupa chengetedzo yakakwana yekuramba kurwiswa kubva zvisiri pamutemo optical network unit.ONU), pasina mubvunzo ichava netarisiro yakanaka yekushandisa mune ramangwana.