吉林大学学报(工学版) ›› 2011, Vol. 41 ›› Issue (增刊1): 304-308.

• paper • Previous Articles     Next Articles

Channel estimate algorithm based on twice interpolation in MIMO-OFDM systems

MA Zhuo1, YUAN Wei2, DU Shuan-yi1, WANG Xin-mei1   

  1. 1. State Key Lab of ISN, Xidian University, Xi'an 710071, China;
    2. Xi'an New Postcom Communication Equipment Ltd.Co., Xi'an 710075, China
  • Received:2010-05-12 Online:2011-09-01 Published:2011-09-01

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Abstract:

Under the single time-frequency chuck scenario,a twice interpolation algorithm was given,which can be applied in such situation that the number of pilot symbols are fewer than that of the parameters of the polynomial model.The LMMSE filter with interpolation was used by proposed algerithm as the first interpolation step,followed by a polynomial interpolation as the second interpolation step.Simulation result shows that the proposed algorithm can be applied to different velocities of receiver.Especially Under the vehiclular channel model,the proposed algorithm can achieve 2~3 dB BER gain than one-dimensional linear interpolation algorithm for large SNR.

Key words: communication, channel estimate, single time-frequency chuck, polynomial interpolation, twice interpolation

CLC Number: 

  • TN911.5


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