›› 2013, Vol. 26 ›› Issue (11): 47-.

• Articles • Previous Articles     Next Articles

OFDM Synchronization and Sparse Channel Estimation by Using ZC Sequences

SUN Hu   

  1. (School of Electronic Engineering,Xidian University,Xi'an 710071,China)
  • Online:2013-11-15 Published:2013-11-19


A new pilot with the ZC sequences is designed for the OFDM system to achieve the symbol timing synchronization,the frequency offset estimation and the sparse channel estimation in the time domain.The symbol timing synchronization is performed without local sequences.The frequency offset estimation is completed without FFT.In the sparse channel estimation,a Compressed Sensing (CS) matrix formed by the ZC sequences is optimized,and the sparse channel in the time domain can be sensed by the CS matrix optimized and reconstructed via Orthogonal Matching Pursuit (OMP) algorithm.Simulation results show that the new pilot can fulfill the synchronization and sparse channel estimation in the time domain precisely.

Key words: OFDM;synchronization;sparse channel estimation;ZC;compressed sensing;OMP

CLC Number: 

  • TN919.3