PAPR reduction scheme with selective tone reservation for OFDM signals

Abstract

SUMMARYIn this paper, we propose a peak‐to‐average power ratio (PAPR) reduction scheme with selective tone reservation. In this scheme, the preset peak reduction tone (PRT) set would be divided into M PRT subsets that can generate M time‐domain kernels. The differences of the slopes for the phase responses of the M time‐domain kernels would be considered to design the M PRT subsets in reducing the PAPR of the OFDM transmitted signal. In addition, we can further enhance the PAPR reduction performance by interactively selecting the most appropriate one among the M time‐domain kernels for each OFDM symbol. Simulation results show that the proposed scheme can achieve better PAPR reduction performance than the conventional tone reservation scheme with the same preset PRT set. In comparison with the conventional tone reservation scheme, our PAPR reduction scheme need not send any side information and increase a little bit hardware complexity to improve the PAPR reduction performance. Copyright © 2012 John Wiley & Sons, Ltd.

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

“…3. M-TR SCHEME Various methods [9][10][11][12][13][14][15][16][17][18] have been proposed to reduce the PAPR of OFDM signals, among them, the TR method is an attractive one because it can achieve significant PAPR reduction without side information and signal distortion. In the TR method, transceiver agrees on reserving a small set of tones for generating peak reduction signals for PAPR reduction.…”

Performance of feed‐forward linearizers of power amplifiers in OFDM systems under complex gain errors

“…Current and future wireless systems are based on using high peak to average power ratio signals such as OFDM signaling, which uses a large number of sub-carriers in signal transmission [1][2][3]. As a result, nonlinear devices in the system (mainly power amplifiers) can cause several nonlinear effects such as in-band and out-of-band spectral re-growth, which results in degradation signal-tonoise ratio (SNR) in the main and adjacent channels.…”

Power boosting factor determination in impulse postfix‐OFDM‐based positioning system

“…However, power boosting factor (PBF) determination is an important issue for IP-OFDM system. With the assumption that the total transmit power is fixed, the accuracy of channel estimation can be enhanced by increasing the power of impulse sample, which will benefit the communication quality; nevertheless, if relatively high power was assigned on the impulse sample, the BER performance of IP-OFDM system will likely be degraded because the power distributed to data samples is insufficient; meanwhile, huge amplitude of IP will aggravate peak-to-average power ratio (PAPR) issue, which is a common problem in OFDM system [3][4][5]. Thus, PBF determination has been paid much attention as an important issue in IP-OFDM system [2,6,7].…”