Peak-to-average power ratio reduction in space frequency block coding multi-input multi-output orthogonal frequency division multiplexing systems by tone reservation

In this paper, a tone reservation TR method is employed to reduce the peak-to-average power ratio PAPR in multi-input multi-output orthogonal frequency division multiplexing systems with space frequency block coding SFBC. The key idea of the employed TR method is taking signals on multiple transmit antennas into account to design appropriate peak reduction symbols, which can significantly reduce the PAPR of SFBC multi-input multi-output orthogonal frequency division multiplexing signals. With the employed TR scheme, the SFBC structure can be maintained, whereas the traditional TR method would destroy it, resulting in the degradation of bit error rate BER performance. Simulation results demonstrate that the employed TR scheme can provide significantly better BER performance than the traditional TR method with slight PAPR reduction degradation. Copyright © 2013 John Wiley & Sons, Ltd.