Channel Estimation and PAPR Computation for MIMO-OFDM Systems

Abstract: In this paper, we are reducing the PAPR for the existing method which estimates the channel parameters like in-phase and quadrature-phase imbalances (IQI), carrier frequency offset (CFO) through channel response for multiple-input multiple output orthogonal frequency division multiplexing (MIMO-OFDM) systems. By utilizing a new concept called channel residual energy (CRE), without finding the channel response we can estimate both the IQI and CFO by minimizing the CRE. The proposed method single carrier-frequency division multiple access (SC-FDMA) reduces the PAPR approximately equal to one.

Keywords: IQI, CFO, MIMO-OFDM, CRE, channel response, PAPR, SC-FDMA.