Improved Frequency Domain Differential Demodulation for Fast Fading HF Channels

Author

Li Ke ; Hou Chunping ; Fu Jinlin ; Liu Chungui ; Lei Jianjun

Author_Institution

Sch. of Electron. & Inf. Eng., Tianjin Univ., Tianjin, China

fYear

2009

fDate

24-26 Sept. 2009

Firstpage

1

Lastpage

5

Abstract

The bit error rate (BER) of MDPSK-OFDM in frequency domain over fading HF channels is evaluated, and the optimum value of subcarrier number is given and the upper and lower bound of BER is obtained. The convention differential demodulation scheme is sensitive to the value of subcarrier number in time-variant multipath channel. Improved frequency domain differential demodulation (FDDD) scheme for fast fading HF channel is proposed. In addition, the simulation results show that our proposed scheme is superior to the conventional differential demodulation technique at fast fading HF channel.

Keywords

OFDM modulation; demodulation; differential phase shift keying; error statistics; fading channels; frequency-domain analysis; multipath channels; MDPSK-OFDM; bit error rate; fast fading HF channels; improved frequency domain differential demodulation; time-variant multipath channel; Bit error rate; Delay; Demodulation; Fading; Frequency domain analysis; Frequency estimation; Hafnium; OFDM; Performance analysis; System performance;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-3692-7

Electronic_ISBN

978-1-4244-3693-4

Type

conf

DOI

10.1109/WICOM.2009.5301087

Filename

5301087