In this paper. a set of cooperative non-orthogonal multiple access (NOMA) transmission schemes is proposed. in which two half-duplex relaying user terminals (UTs) successively deliver the AP signals toward two NOMA UTs. The successive relaying (SR) of two HD relays emulates the full-duplex (FD) relaying transmission such that the whole transmission of one data block is finished in one... https://allfixelectricales.shop/product-category/brush-roller/