LTE UL Transmission scheme

For both FDD and TDD, the basic uplink transmission scheme is based on low-peak-toaverage power ratio (low-PAPR) single-carrier transmission (SC-FDMA) with cyclic prefix to achieve uplink inter-user orthogonality and to enable efficient frequency-domain equalization at the receiver side. Each 10 ms radio frame is divided into 10 equally sized sub-frames.

Each sub-frame is then divided into two equally sized time slots. Scheduling can operate on a sub-frame level.

Supported uplink data-modulation schemes are QPSK, 16QAM, and 64QAM.