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In this paper, we propose a new method in which the recently proposed non-orthogonal multiple access (NOMA) is combined with the conventional Alamouti scheme. The developed analytical results and simulation both show that if the targeted data rates and the allocated power satisfy an inequality constraint, then our proposed method can effectively increase the diversity order of NOMA from 1 to 2, the...
Recently, some orthogonal multiple access schemes are utilized in return channels. However, in the field of wireless communication, as the number of users increases, the orthogonal resources are difficult to meet the explosive demand of access. For this reason, some non-orthogonal multiple access (NOMA) schemes have been proposed to solve the key problem of massive connectivity. In this paper, we...
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