Time-varying channel estimation for MIMO OFDM systems

被引：2

作者：

Hu, D ^{[1
]}

Yang, LX ^{[1
]}

He, ZY ^{[1
]}

机构：

[1] Southeast Univ, Dept Radio Engn, Nanjing 210096, Peoples R China

来源：

PROCEEDINGS OF THE 2004 INTERNATIONAL SYMPOSIUM ON INTELLIGENT MULTIMEDIA, VIDEO AND SPEECH PROCESSING | 2004年

关键词：

D O I：

10.1109/ISIMP.2004.1434008

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

The time-varying channel estimation methods for MIMO OFDM systems based on pilot sequences are investigated. In this paper, we assume that the channel varies in a linear fashion during a block period and express the channel impulse response (CIR) as a function of the middle impulse response and the slope of the channel variation. Hence, the channel estimation method proposed first estimates the middle CIR of the current OFDM symbol and then estimates the slope. The part of the estimation mean square error (MSE) is computed and the optimal pilot sequences which call reduce MSE are given. The simulation results show that the proposed estimation method has good performances and the use of the optimal pilot sequences can enhance channel estimation.

引用

页码：93 / 96

页数：4

共 7 条

[1] Optimal training design for MIMO OFDM systems in mobile wireless channels [J].

Barhumi, I ;

Leus, G ;

Moonen, M .

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 2003, 51 (06) :1615-1624

[2] ANALYSIS AND SIMULATION OF A DIGITAL MOBILE CHANNEL USING ORTHOGONAL FREQUENCY-DIVISION MULTIPLEXING [J].

CIMINI, LJ .

IEEE TRANSACTIONS ON COMMUNICATIONS, 1985, 33 (07) :665-675

[3]

Jeon WG, 2000, PIMRC 2000: 11TH IEEE INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS, VOLS 1 AND 2, PROCEEDINGS, P1246, DOI 10.1109/PIMRC.2000.881618

[4]

Mostofi Y, 2003, 2003 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, VOLS 1-5, P3351

[5]

SHIN M, 2003, ICASSP 03, V4, P397

[6]

STAMOULIS A, 2002, WCNC2002, V1, P465

[7]

SUN S, 2003, WCNC 2003, V1, P38

← 1 →