Abstract
Non-orthogonal multiple access (NOMA) enables 5G mobile networks to transmit correlated information sources (CISs) simultaneously, in contrast to orthogonal multiple access. Recently, the achievable data rates were derived for NOMA with CIS. However, only the achievable rate region was investigated for two-user CIS NOMA. Therefore, in this study, we address the achievable rate volume of three-user CIS NOMA. First, the closed-form expression for the achievable rate volume of three-user CIS NOMA is derived. Second, the exact power allocation ranges of the rate volume of three-user independent information source (IIS) NOMA to be achieved by three-user CIS NOMA are derived. Then, it is shown that only a portion of the rate volume of the three-user IIS NOMA scheme can be achieved by the three-user CIS NOMA scheme.
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