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Abstract
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Article Information:
Dual Turbo MIMO-OFDM Channel Estimation Based on Puncher Technique via UWA Channels
Gang Qiao, Wei Wang, Rehan Khan, Yue Wang and Songzuo Liu
Corresponding Author: Gang Qiao
Submitted: July 17, 2012
Accepted: August 17, 2012
Published: February 11, 2013 |
Abstract:
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In this study, various techniques of UWA (Underwater Acoustic, UWA) channel estimation for underwater MIMO-OFDM system are studied. Dual turbo channel estimation algorithm based on channel puncture technique is proposed. In order to judge the criteria of channel compensation, difference between the raw received signal and the re-coded information signal is carried out. The uncertain sub-channels are punched by using channel puncture technique and replaced by the responses estimated by MMSE (Minimum Mean Square Error, MMSE) or OMP (Orthogonal Matching Pursuit, OMP) algorithms. Compared with the conventional existing algorithms, the proposed algorithm can effectively reduce the occupancy of pilots, offer confined error propagation and significantly increase the stability of the system with Monte Caro simulation. The results of in-tank-experiment further indorse the reliable performance with improved efficiency of 1.51 bits/s/Hz.
Key words: Dual turbo channel estimation, MIMO-OFDM, MMSE, OMP, puncture technique, underwater acoustic channel,
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Cite this Reference:
Gang Qiao, Wei Wang, Rehan Khan, Yue Wang and Songzuo Liu, . Dual Turbo MIMO-OFDM Channel Estimation Based on Puncher Technique via UWA Channels. Research Journal of Applied Sciences, Engineering and Technology, (05): 1599-1607.
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ISSN (Online): 2040-7467
ISSN (Print): 2040-7459 |
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