Performance analysis of PAPR reduction in STBC MIMO-OFDM system

Orthogonal frequency division multiplexing (OFDM) may be united with antenna arrays at the transmitter and receiver side to improve the diversity gain and to improve the system competence on time-variant along with the frequency-selective channels, which results in a multiple-input multiple-output (MIMO) composition. The space-time block coding (STBC) incorporated for OFDM systems with multiple transmit antennas is actually a type where coding is implemented in the time domain, that is, OFDM symbols. Therefore it is a relatively new signal processing technique for systems with multiple transmit antennas and multiple receives antennas, to increase capacity in wireless communications without sacrificing bandwidth. However, like OFDM, one main disadvantage of MIMO-OFDM is the high Peak to Average Power Ratio (PAPR) of the transmitter´s output signal on different antennas. This paper provides a performance Comparison for reduction of PAPR in STBC MIMO-OFDM Systems using Clipping and Filtering (CF), Selective Mapping (SLM), Partial Transmit Sequence (PTS) and Tone Reservation (TR) scheme.