... OFDMA, −20 dB OFDMA, −10 dB OFDMA, dB OFDMA, 10 dB OFDMA, 20 dB OFDMA, 30 dB SC -FDMA, −20 dB SC -FDMA, −10 dB SC -FDMA, dB SC -FDMA, 10 dB SC -FDMA, 20 dB SC -FDMA, 30 dB Figure 5: Comparison of the ... SNR (dB) OFDMA, Rx OFDMA, Rx (MRC) OFDMA, Rx (MRC) SC -FDMA, Rx SC -FDMA, Rx (MRC) SC -FDMA, Rx (MRC) (b) Figure 6: Comparison of the achievable information rate between OFDMA and SC -FDMA for different ... nowadays The paper is organized as follows In Section we introduce the system model and the information rate for OFDMA and SC -FDMA In Section we derive the SCFDMA rate result and provide its geometrical...