name: FDMA
full_form: Frequency Division Multiple Access
context: For and Ï/2-BPSK modulation only 2-of-3 adjacent subcarriers are selected as described in 5.5.2.1A.2. The time-continuous signal in SC-FDMA symbol in an uplink slot is defined by for where , , is given by Table 5.6-1, and and are respectively the modulation value for subcarrier index and for symbol , and the values of used on and are respectively obtained by subtracting from the resulting set of allocated subcarriers as described in Table 8.1.6-1 of [4], and represents the lower subcarrier index among the selected subcarriers and is the subcarrier index adjacent to it. The phase rotation is given by where is the number of transport blocks defined in clause 8.0 of TS 36.213[ Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures ]  [4]. If >1 and interleaving between codewords is applied according to clause 8.0 of TS 36.213[ Evolved Universal Terrestrial Radio Access (E-UTRA); Physical layer procedures ]  [4], then the symbol counter is reset at the start of the first PUSCH codeword transmission and incremented for each symbol during the transmission of the PUSCH codewords. For other cases, the symbol counter is reset at the start of each PUSCH codeword transmission and incremented for each symbol during the transmission of the PUSCH codeword. The SC-FDMA symbols in a slot shall be transmitted in increasing order of , starting with , where SC-FDMA symbol starts at time within the slot.
description: Frequency Division Multiple Access (FDMA) is a technology used in telecommunications to allow multiple users to share the same communication channel by dividing it into different frequency bands. In the context of Evolved Universal Terrestrial Radio Access (E-UTRA), FDMA is utilized in Single-Carrier Frequency Division Multiple Access (SC-FDMA) for uplink transmissions, enabling efficient use of bandwidth and reducing interference between users.
explanation: FDMA is classified as a Technology because it refers to a specific method of multiplexing used in telecommunications, which is a key aspect of the 3GPP's specifications for E-UTRA. The provided context highlights its application in SC-FDMA, demonstrating its role in enabling multiple access in wireless communication systems.
section_title: 5.6A.2 Modulation scheme Ï/2-BPSK
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