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| Time-domain Fine Channel Estimation Based on Broadband Burst Single-carrier Frequency Domain Equalization Transmission |
| WU Zhao① ZHANG Yu①② JIANG Long① SONG Jian③④ |
①(Department of Electronic Engineering, Tsinghua University, Beijing 100084, China)
②(National Laboratory for Information Science and Technology, Tsinghua University, Beijing 100084, China)
③(National Engineering Laboratory for DTV (Beijing), Beijing 100091, China)
④(Shenzhen City Key Laboratory of Digital TV System, Shenzhen 518000, China) |
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Abstract Single Carrier-Frequency Domain Equalization (SC-FDE) is a competitive alternative for broadband wireless communication systems, which has attracted wide attention and extensive research. As an effective technical solution to cope with multipath effects, SC-FDE shows low complexity and has low signal peak to average power ratio compared with OFDM signals. In burst SC-FDE systems, channel information is required at the receivers to avoid the performance loss of demodulations. Traditional channel estimation methods based on training sequences are not very suitable for broadband burst SC-FDE system. In this paper, a fine channel estimation method based on the time-domain training sequence is proposed. Channel parameters are obtained with the aid of time domain PN sequence based on maximum likelihood criteria. Besides, the noise suppression process is performed for channel estimation values on account of the channel noise strength. Simulation results demonstrate that the proposed channel estimation method can significantly reduce the Bit Error Rate (BER) of signal reception while maintaining low realization complexity.
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Received: 08 June 2015
Published: 30 March 2016
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| Fund: The National 973 Project of China (2012CB 316000), The National Science and Technology Major Project?of China (2015ZX03002008), The National Power Grid Technology Project of China ([2015]404-41) |
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Corresponding Authors:
ZHANG Yu
E-mail: zhang-yu@tsinghua.edu.cn
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