Transmit power imbalance reduction method and nonlinear companding transform for beamforming OFDM systems

被引：1

作者：

Taroda, Satoshi ^{[1
]}

Tezuka, Ken ^{[1
]}

Higuchi, Shoichi ^{[1
]}

Ahn, Chang-Jun ^{[1
]}

Maruta, Kazuki ^{[1
]}

机构：

[1] Chiba Univ, Grad Sch Engn, Inage Ku, 1-33 Yayoi Cho, Chiba 2638522, Japan

来源：

ICT EXPRESS | 2019年 / 5卷 / 04期

关键词：

Beamforming; PAPR reduction; Power imbalance; 5G; SIGNALS;

D O I：

10.1016/j.icte.2018.03.004

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Due to large peak-to-average power ratio (PAPR) at the time domain OFDM signal, various peak signal reduction methods for OFDM systems have been proposed. However, in a transmit OFDM beamforming, multiplication of the transmit signal using the weights causes transmit power imbalance between antennas and increases peak signal. We propose two approaches to mitigate these problems. Adding the pseudo-noise to covariance matrix at the process of weight calculation can alleviate the transmit power imbalance. Furthermore, the companding transform of time domain signal can reduce the peak signals. We show details of proposed methods and evaluate PAPR and BER performance. (C) 2019 The Korean Institute of Communications and Information Sciences (KICS). Publishing services by Elsevier B.V.

引用

页码：261 / 265

页数：5

共 50 条

[21] Threshold-based piecewise companding transform for PAPR reduction in OFDM systems
Liu, Shu-Hua
Li, Yong-Zhao
Zhang, Hai-Lin
Liu, Ying-Ting
Journal of China Universities of Posts and Telecommunications, 2013, 20 (02): : 1 - 6
[22] Threshold-based piecewise companding transform for PAPR reduction in OFDM systems
LIU Shu-hua
LI Yong-zhao
ZHANG Hai-lin
LIU Ying-ting
The Journal of China Universities of Posts and Telecommunications, 2013, (02) : 1 - 6
[23] Nonlinear Companding Technique for PAPR Reduction in OFDM
Singh, Eashendra
Arif, Mohammad
Shrivastava, Vineet
Bhatia, Rinkoo
2014 INTERNATIONAL CONFERENCE ON SIGNAL PROPAGATION AND COMPUTER TECHNOLOGY (ICSPCT 2014), 2014, : 801 - 805
[24] Threshold-based piecewise companding transform for PAPR reduction in OFDM systems
LIU Shuhua
LI Yongzhao
ZHANG Hailin
LIU Yingting
TheJournalofChinaUniversitiesofPostsandTelecommunications, 2013, 20 (02) : 1 - 6+18
[25] PAPR Reduction in NC-OFDM/OQAM System using Nonlinear Companding Transform
Renuka, N.
Sairam, M. Satya
JOURNAL OF SCIENTIFIC & INDUSTRIAL RESEARCH, 2019, 78 (05): : 278 - 281
[26] Novel Nonlinear Companding Transform for Reduced Peak-to-Average Power Ratio in OFDM
Bandara, Kasun
Tiwari, Samrat
Chung, Yeon-Ho
2014 INTERNATIONAL SYMPOSIUM ON COMPUTER, CONSUMER AND CONTROL (IS3C 2014), 2014, : 1022 - 1025
[27] An Efficient Piecewise Nonlinear Companding Transform for PAPR Reduction in UFMC Systems
Liu, Kaiming
Ge, Yaning
Liu, Yuanan
2019 IEEE/CIC INTERNATIONAL CONFERENCE ON COMMUNICATIONS IN CHINA (ICCC), 2019,
[28] Nonlinear companding transform for reducing peak-to-average power ratio of OFDM signals
Jiang, T
Zhu, GX
IEEE TRANSACTIONS ON BROADCASTING, 2004, 50 (03) : 342 - 346
[29] An Efficient Nonlinear Companding Transform Method for PAPR Reduction of GFDM signals
Liu, Kaiming
Deng, WeiFeng
Liu, Yuanan
2018 IEEE/CIC INTERNATIONAL CONFERENCE ON COMMUNICATIONS IN CHINA (ICCC), 2018, : 460 - 464
[30] Linear Companding Transform for the Reduction of Peak-to-Average Power Ratio of OFDM Signals
Aburakhia, Sulaiman A.
Badran, Ehab F.
Mohamed, Darwish A. E.
IEEE TRANSACTIONS ON BROADCASTING, 2009, 55 (01) : 155 - 160

← 1 2 3 4 5 →