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This paper proposes Layered Orthogonal Frequency Division Multiple Access (OFDMA) radio access for LTE (Long-Term Evolution)-Advanced to achieve higher-level system requirements than those in Release 8 LTE called Evolved UMTS Terrestrial Radio Access (UTRA) and UMTS Terrestrial Radio Access Network (UTRAN). Layered-OFDMA comprises layered transmission bandwidth assignment according to the required data rate, a layered control signaling structure, and support for layered environments in which an adaptive multi-access scheme with hybrid single-carrier and multicarrier based radio access is applied.
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