Iterative Based Time Domain Equalization Method for OFDM Signal under High Mobile Environments

被引：0

作者：

Reangsuntea, Pongsathorn ^{[1
]}

Mori, Kazuo ^{[1
]}

Kobayashi, Hideo ^{[1
]}

Boonsrimuang, Pisit ^{[2
]}

机构：

[1] Mie Univ, Dept Elect & Elect Engn, Grad Sch Engn, Tsu, Mie 5148507, Japan

[2] King Mongkuts Inst Technol Ladkrabang, Fac Engn, Dept Telecommun Engn, Bangkok 10520, Thailand

来源：

2014 8TH INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATION SYSTEMS (ICSPCS) | 2014年

关键词：

OFDM; time-varying channel; training sequence (TS); frequency domain equalization; time domain equalization;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A loss of subcarrier orthogonality in orthogonal frequency division multiplexing (OFDM) signal due to timevarying multipath fading channel causes an inter-carrier interference (ICI) which would lead fatal degradation of bit error rate (BER) performance. To solve this problem, this paper proposes a high accuracy time domain channel impulse response (CIR) estimation method and a time domain equalization (TDE) method of using estimated CIR at every sampling time in conjunction with a low-complexity iterative method instead of using an inverse matrix calculation. The salient feature of proposed method is to employ a time-domain training sequence (TS) for the estimation of CIR at every sampling time and lowcomplexity iterative method for solving the simultaneous equations which are required in the TDE method. This paper presents various simulation results to demonstrate the effectiveness of proposed TDE method as comparing with the conventional frequency domain equalization (FDE) method.

引用

页数：6

共 50 条

[31] Iterative Equalization Based on Expectation Propagation: a Frequency Domain Approach
Sahin, Serdar
Cipriano, Antonio M.
Poulliat, Charly
Boucheret, Marie-Laure
2018 26TH EUROPEAN SIGNAL PROCESSING CONFERENCE (EUSIPCO), 2018, : 932 - 936
[32] AN ITERATIVE TIME DOMAIN DENOISING METHOD
Tay, Peter C.
2019 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP), 2019, : 1433 - 1437
[33] A SEMI-BLIND TIME DOMAIN EQUALIZATION OF SCFDMA SIGNAL
Yameogo, Sosthene
Palicot, Jacques
Cariou, Laurent
2009 IEEE INTERNATIONAL SYMPOSIUM ON SIGNAL PROCESSING AND INFORMATION TECHNOLOGY (ISSPIT 2009), 2009, : 360 - +
[34] Iterative rake equalization method for low-complexity OTSM in high-speed mobile environment
Li G.
Long K.
Ye C.
Liang J.
Tongxin Xuebao/Journal on Communications, 2022, 43 (10): : 86 - 93
[35] Production of time domain fuzzy control rules for channel estimation and equalization in OFDM based communication systems
Ozen, A.
Soysal, B.
Kaya, I.
Altas, I. H.
2006 IEEE 14TH SIGNAL PROCESSING AND COMMUNICATIONS APPLICATIONS, VOLS 1 AND 2, 2006, : 245 - +
[36] Volterra Based Nonlinear Equalization Method for Optical High-order OFDM/OQAM
Fu, Yixin
Fang, Xi
Sui, Xin
Zhang, Lei
Ding, Ding
Gao, Xianwei
2020 12TH INTERNATIONAL CONFERENCE ON COMMUNICATION SOFTWARE AND NETWORKS (ICCSN 2020), 2020, : 106 - 109
[37] Recursive LMMSE-based equalization in wireless mobile coded OFDM
Liu, Daniel N.
Fitz, Michael P.
IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC, 2007,
[38] Recursive LMMSE-based equalization in wireless mobile coded OFDM
Liu, Daniel N.
Fitz, Michael P.
2007 IEEE 18TH INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOLS 1-9, 2007, : 293 - 297
[39] Signal Equalization in MIMO-OFDM Based Sensor Network System
Singh, Gurmukh
Saini, Hardeep Singh
Singh, Gagandeep
Mahajan, Leena
Kumar, Rajesh
AMBIENT COMMUNICATIONS AND COMPUTER SYSTEMS, RACCCS 2017, 2018, 696 : 131 - 141
[40] Time-domain equalization technique for intercarrier interference suppression in OFDM systems
Kumar, R.
Malarvizhi, S.
ADCOM 2007: PROCEEDINGS OF THE 15TH INTERNATIONAL CONFERENCE ON ADVANCED COMPUTING AND COMMUNICATIONS, 2007, : 391 - 396

← 1 2 3 4 5 →