›› 2012, Vol. 25 ›› Issue (6): 121-.

• Articles • Previous Articles     Next Articles

Channel Estimation Using Superimposed Training for OFDM System

 DUAN Peng   

  1. (The Ministry of Communications,20 Research Institute of China Electronics Technology Group Corporation,Xi'an 710068,China)
  • Online:2012-06-15 Published:2012-08-23


In this paper a novel superimposed pilot channel estimation method is proposed,which extracts the pilot from unknown data completely according to the character that the energy of periodic sequence mainly concentrates on a few frequency points.Based on the auto-correlation of PN sequence,the impact of noise on pilot is further reduced in time domain,which increases the accuracy of channel estimation efficiently.The extensive experiment results show that proposed algorithm has the high bandwidth efficiency,the performance of which is superior to other existing algorithms.

Key words: OFDM;channel estimation;superimposed training;PN sequence

CLC Number: 

  • TN911.23