TY - JOUR
T1 - Performance Analysis of OFDM with Peak Cancellation under EVM and ACLR Restrictions
AU - Kageyama, Tomoya
AU - Muta, Osamu
AU - Gacanin, Haris
N1 - Funding Information:
Manuscript received September 15, 2019; revised January 17, 2020; accepted March 3, 2020. Date of publication April 2, 2020; date of current version June 18, 2020. This work was supported in part by Japan Society for the Promotion of Science (JSPS) KAKENHI under Grants JP17K06427 and JP17J04710, and in part by Kyushu University Short-term International Research Exchange Program by University Research Administration Office. This work was presented in part at the 2015 IEEE International Symposium on Personal Indoor and Mobile Radio Communication (IEEE PIMRC 2015) [31]. The review of this article was coordinated by Dr. V. Marojevic. (Corresponding author: Tomoya Kageyama.) Tomoya Kageyama is with the Graduate School of Information Science and Electrical Engineering, Kyushu University in Japan, Fukuoka 812-8581, Japan (e-mail: kageyama@mobcom.ait.kyushu-u.ac.jp).
Publisher Copyright:
© 1967-2012 IEEE.
PY - 2020/6
Y1 - 2020/6
N2 - This paper presents performance analysis of an adaptive peak cancellation (PC) method to reduce the high peak-to-average power ratio (PAPR) for OFDM systems, while keeping the out-of-band (OoB) power leakage as well as an in-band distortion power below the pre-determined level. In this work, the increase of adjacent leakage power ratio (ACLR) and error vector magnitude (EVM) are estimated recursively using the detected peak amplitude. We present analytical framework for OFDM-based systems with theoretical bit error rate (BER) representations and detection of optimum peak threshold based on predefined EVM and ACLR requirements. Moreover, the optimum peak detection threshold is selected based on theoretical design to maintain the pre-defined distortion level. Thus, their degradations are restricted below the pre-defined levels which correspond to target OoB radiation. We also discuss the practical design of peak-cancellation signal with target OoB radiation and in-band distortion through optimizing the windowing size of the PC signal. Numerical results show the improvements with respect to both achievable BER and PAPR with the PC method in eigen-beam space division multiplexing (E-SDM) systems under restriction of OoB power radiation. It can also be seen that the theoretical BER shows good agreements with simulation results.
AB - This paper presents performance analysis of an adaptive peak cancellation (PC) method to reduce the high peak-to-average power ratio (PAPR) for OFDM systems, while keeping the out-of-band (OoB) power leakage as well as an in-band distortion power below the pre-determined level. In this work, the increase of adjacent leakage power ratio (ACLR) and error vector magnitude (EVM) are estimated recursively using the detected peak amplitude. We present analytical framework for OFDM-based systems with theoretical bit error rate (BER) representations and detection of optimum peak threshold based on predefined EVM and ACLR requirements. Moreover, the optimum peak detection threshold is selected based on theoretical design to maintain the pre-defined distortion level. Thus, their degradations are restricted below the pre-defined levels which correspond to target OoB radiation. We also discuss the practical design of peak-cancellation signal with target OoB radiation and in-band distortion through optimizing the windowing size of the PC signal. Numerical results show the improvements with respect to both achievable BER and PAPR with the PC method in eigen-beam space division multiplexing (E-SDM) systems under restriction of OoB power radiation. It can also be seen that the theoretical BER shows good agreements with simulation results.
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U2 - 10.1109/TVT.2020.2982587
DO - 10.1109/TVT.2020.2982587
M3 - Article
AN - SCOPUS:85087326556
SN - 0018-9545
VL - 69
SP - 6230
EP - 6241
JO - IEEE Transactions on Vehicular Technology
JF - IEEE Transactions on Vehicular Technology
IS - 6
M1 - 9055067
ER -