A technological analysis and survey on peak-to-average power reduction (PAPR) in MIMO-OFDM wireless system

With the constant demand of high spectral efficiency and high transmission speed for audio, video and internet application, MIMO-OFDM has become the most promising technology for present and future wireless communication. However, the main drawback of MIMO-OFDM system is high peak-to-average power ratio (PAPR) for large subcarrier which creates many problems in practical applications. Many methods are proposed to overcome the high PAPR problem like clipping, coding, phase rotation, signal scrambling etc. In this paper we present a brief analysis of different methods to reduce the high PAPR, such as selected mapping (SLM), partial transmit sequence (PTS), space frequency block code (SFBC) MIMO-OFDM and SFBC MIMO-OFDM with cooperative PTS.