TY - GEN
T1 - Effect of Limiter Based PAPR Reduction for Massive MIMO Systems
AU - Kageyama, Tomova
AU - Muta, Osamu
AU - Chen, Cheng Ming
AU - Pollin, Sofie
N1 - Funding Information:
ACKNOWLEDGMENT This research was partially supported by the JSPS KAK-ENHI (JP17K06427, JP17J04710).
Publisher Copyright:
© 2018 IEEE.
PY - 2018/7/2
Y1 - 2018/7/2
N2 - In massive multi-input multi-output (mMIMO) orthogonal frequency division multiplexing (OFDM) systems, reduction of high peak-to-average power ratio (PAPR) is a challenging problem. Although deliberate amplitude peak limiting is a promising PAPR reduction approach, it causes un-desired nonlinear in-band distortion and out-of-band radiation. Thus, the joint use of a peak limiter and band-limitation filter such as clipping-and-filtering (CF) is required. The objective of this paper is to evaluate the effect of CF based PAPR reduction for mMIMO-OFDM systems, where a band-limitation filter is designed to limit out-of-band radiation due to clipping while mitigating peak amplitude regrowth due to filtering. We discuss the effect of utilizing extra degrees of freedom for compensating in-band distortion due to CF in mMIMO systems. Simulation results verified the effectiveness of the above approach in terms of instantaneous peak power, adjacent channel leakage power ratio (ACLR) and signal-to-distortion power ratio (SDR) in mMIMO-OFDM downlink.
AB - In massive multi-input multi-output (mMIMO) orthogonal frequency division multiplexing (OFDM) systems, reduction of high peak-to-average power ratio (PAPR) is a challenging problem. Although deliberate amplitude peak limiting is a promising PAPR reduction approach, it causes un-desired nonlinear in-band distortion and out-of-band radiation. Thus, the joint use of a peak limiter and band-limitation filter such as clipping-and-filtering (CF) is required. The objective of this paper is to evaluate the effect of CF based PAPR reduction for mMIMO-OFDM systems, where a band-limitation filter is designed to limit out-of-band radiation due to clipping while mitigating peak amplitude regrowth due to filtering. We discuss the effect of utilizing extra degrees of freedom for compensating in-band distortion due to CF in mMIMO systems. Simulation results verified the effectiveness of the above approach in terms of instantaneous peak power, adjacent channel leakage power ratio (ACLR) and signal-to-distortion power ratio (SDR) in mMIMO-OFDM downlink.
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U2 - 10.1109/JEC-ECC.2018.8679567
DO - 10.1109/JEC-ECC.2018.8679567
M3 - Conference contribution
AN - SCOPUS:85064691285
T3 - 2018 Proceedings of the Japan-Africa Conference on Electronics, Communications, and Computations, JAC-ECC 2018
SP - 43
EP - 46
BT - 2018 Proceedings of the Japan-Africa Conference on Electronics, Communications, and Computations, JAC-ECC 2018
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2018 Japan-Africa Conference on Electronics, Communications, and Computations, JAC-ECC 2018
Y2 - 17 December 2018 through 19 December 2018
ER -