Performance analysis of SC-FDMA and OFDMA systems based on SER by using ITU-pedestrian and vehicular channels with QPSK modulation

Abstract

© 2015 The Authors. The reason behind the transform in the wirelesscommunication fields are back to the development in human life. High data rate is one of the important requirement that effect in the communication systems. Orthogonal Frequency Division Multiple Access (OFDMA) is considered an attractive technique to achieve this requirement. Several reasons such as high spectral efficiency and robustness to multipath phenomena made OFDMA adopted in the downlink multiple transmissions by several technologies such as Worldwide Interoperability for Microwave Access (WiMAX) and Long Term Evolution (LTE). High peak to average power ratio PAPR made Single Carrier Frequency Division Multiple Access SC-FDMA an Alternative technique as compare withOFDMAfor the uplink in LTE. In this paper we study the performance analysis of OFDMA and SC-FDMA depending on Symbol Error Rate (SER). Different types of International Telecommunication Union (ITU) multipath channel were introduced to study the performance in term of SER. In the receiver systems, MMSE and ZF equalizer were introduced. MMSE equalizer appears better performance than ZF equalizer.