Science & Engineering Research Support soCiety (SERSC)
Single Carrier Frequency Domain Multiple Access (SC-FDMA) has been adopted for the 3GPP Long-Term Evolution (LTE) uplink multiple access scheme due to the power consumption issue of mobile handsets. Like OFDMA in the downlink, SC-FDMA enables multiple users to be served simultaneously in the uplink. However, all subcarriers allocated to a single user must be contiguous in the frequency domain at each time slot due to its single carrier property. This contiguous allocation constraint makes scheduling difficult. A scheduling scheme in such systems needs to keep this constraint whilst trying to satisfy its own objectives.