ance results are obtained from a detailed UTRALTE uplink link- level simulator. The simulation results show that both SC-FDMA and OFDMA can achieve high spectral efficiency; however, SC-FDMA benefits in obtaining lower PAPR than OFDMA, especially for low-order modulation schemes. A 1 X 2 SIMO antenna configuration highly increases the spectral efficiency of SC-FDMA, making the performance of SC-FDMA with the MMSE receiver comparable to OFDMA, especially at high coding rates. The peak spectral efficiency results for SC-FDMA confirm that it meets the requirement to achieve a spectral efficiency improvement of two or three times that of 3GPP release 6. Despite an increase in base station receiver complexity, the turbo equalizer can reduce the noise enhancement in the SC-FDMA system. Results show that a turbo equalizer receiver for a SIMO system can improve the BLER performance by almost 1 dB compared to a traditional MMSE receiver. Most of the performance gain is obtained with two iterations of the algorithm. Furthermore, the simulation results show that the SC-FDMA turbo equalizer performance is better than or equal to that of OFDMA for all the modulation and coding schemes. A nonlinear power amplifier introduces in-band performance degradation and increases the out-of-band emission. The simulation results confirm that SC-FDMA is more robust against the nonlinear power amplifier because it achieves high spec- tral efficiency also in the presence of nonlinearities. This leads to better power amplifier efficiency, which can be used to increase the cell coverage. References 1. Bingham, J. 1990. Multicarrier modulation for data transmission: An idea whose time has come. IEEE Communications Magazine May: 5-14. 2. Falconer, D., S. Ariyavisitakul, A. Benyamin-Seeyar, and B. Edison. 2002. Frequency domain equalization for single-carrier broadband wireless systems. IEEE Communications Magazine 40 (4): 58-66. 3. Sari, H., G. Karam, and I. Jeanclaude. 1995. Transmission techniques for digital terrestrial TV broadcasting. IEEE