To improve the energy and information transmission efficiency of relay-based wireless powered communication network (WPCN). a two intelligent reflecting surface (IRS) assisted dual-hop relay wireless transmission scheme was proposed. In particular. IRS1 and IRS2 were deployed between the base station (BS) and hybrid relay node (HRN). https://www.lecoureures.shop/product-category/ski-de-fond-femme-vetements-manteau/