MIMO-OFDM AND SC-FDMA FOR LONG-TERM EVOLUTION

Rahim Umar, Haris Majeed, and Nayyer A. Zaidi

Keywords

Single input single output, multiple input multiple output, orthogonal frequency division multiplexing, single carrier frequency division multiple access, Alamouti space time block coding, longterm evolution

Abstract

MIMO-OFDM and single carrier FDMA has recently been considered as a capable downlink and uplink transmission schemes for long-term evolution (LTE). The use of OFDM has some limitation when it is considered for uplink transmission, such as its high peak to average power ratio (PAPR), therefore a new technique, single carrier, is considered for uplink. Single carrier FDMA is as beneficial as OFDM with an addition of low PAPR. In this paper, performance of MIMO-OFDM and SC-FDMA is evaluated using different digital modulation schemes like QPSK, 16-PSK and 4-QAM by modelling a Rayleigh fading channel having single and multiple taps, through simulations. PAPR simulation is also given to support the use of SC-FDMA in uplink transmission.

Important Links:



Go Back