Notice of RetractionA research of signal combining technologies in cooperative diversity of OFDM communication system

Cooperative diversity is widely used in wireless communication. Because of its own unique advantages, we try to combine Cooperative diversity with OFDM. Key technologies of OFDM, three methods of channel estimation, two types of cooperation, and two combining methods in OFDM system are presented in this paper. Simulations of OFDM cooperative diversity system with two combining methods are performed. The performances of OFDM cooperative diversity system under three methods of channel estimation are simulated and analyzed respectively.

[1]  Jiang Tao,et al.  Channel Estimation in OFDM System , 2007 .

[2]  Gregory W. Wornell,et al.  Cooperative diversity in wireless networks: Efficient protocols and outage behavior , 2004, IEEE Transactions on Information Theory.

[3]  Mary Ann Ingram,et al.  OFDM Simulation Using Matlab , 2000 .

[4]  Yuping Zhao,et al.  A novel channel estimation method for OFDM mobile communication systems based on pilot signals and transform-domain processing , 1997, 1997 IEEE 47th Vehicular Technology Conference. Technology in Motion.

[5]  Paul H. Moose,et al.  A technique for orthogonal frequency division multiplexing frequency offset correction , 1994, IEEE Trans. Commun..

[6]  S.K. Wilson,et al.  On channel estimation in OFDM systems , 1995, 1995 IEEE 45th Vehicular Technology Conference. Countdown to the Wireless Twenty-First Century.