DocumentCode
1592894
Title
Doppler diversity for OFDM wireless mobile communications. Part I: frequency domain approach
Author
Kim, Byung-Chul ; Lu, I-Tai
Author_Institution
Syst. Archit. Design Lab, Samsung Electron. Co. Ltd., Suwon, South Korea
Volume
4
fYear
2003
Firstpage
2677
Abstract
A novel frequency domain Doppler diversity technique for OFDM systems is proposed. The received OFDM signal is first frequency shifted to generate various diversity branches. After demodulation, branch outputs are individually weighted and added together. For Doppler spread signal, it alters fading statistics and improves the bit error rate. Extensive simulations show that combining three diversity branches with proper frequency shifts reduces BER by an order when the normalized Doppler spread is larger than 0.3.
Keywords
OFDM modulation; diversity reception; error statistics; mobile radio; signal processing; Doppler diversity technique; Doppler spread signal; OFDM wireless mobile communications; bit error rate; demodulation; diversity branches; fading statistics; frequency domain approach; Bit error rate; Demodulation; Diversity reception; Fading; Frequency diversity; Frequency domain analysis; Mobile communication; OFDM; Signal generators; Wireless communication;
fLanguage
English
Publisher
ieee
Conference_Titel
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
ISSN
1090-3038
Print_ISBN
0-7803-7757-5
Type
conf
DOI
10.1109/VETECS.2003.1208878
Filename
1208878
Link To Document