Title :
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
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;
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2005. MAPE 2005. IEEE International Symposium on
Print_ISBN :
0-7803-9128-4
DOI :
10.1109/MAPE.2005.1618196
