Doppler diversity receiver for broadband wireless OFDM system under high-speed mobile environments

Author

Xin, Wang ; Zhen-hui, Tan ; Xia, Chen

Author_Institution

Modern Telecommun. Inst., Beijing Jiao Tong Univ., China

Volume

2

fYear

2005

Firstpage

1444

Abstract

A novel, simplified time-domain Doppler diversity receiver for OFDM system is proposed. In high-speed railway applications, when the train moves at the speed of 250-500 km/h, the Doppler spread of channel is obvious. With the proposed Doppler diversity receiver, OFDM system performance can be better. And the amount of multiplications and additions of the proposed Doppler diversity receiver can also be reduced. Simulation results show that adequate equalization is necessary for OFDM system under high-speed mobile environments.

Keywords

Doppler effect; OFDM modulation; diversity reception; equalisers; mobile radio; radio receivers; railways; time-domain analysis; wireless channels; 250 to 500 km/h; broadband wireless OFDM system; channel equalization; high-speed railway application; mobile communication; time-domain Doppler diversity receiver; Delay; Fading; Frequency diversity; Interference; Modems; OFDM; Rail transportation; Signal analysis; System performance; Time domain analysis; Doppler diversity; OFDM; high-speed;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2005. MAPE 2005. IEEE International Symposium on

Print_ISBN

0-7803-9128-4

Type

conf

DOI

10.1109/MAPE.2005.1618196

Filename

1618196