@ARTICLE{ma2017structured,
  author={X. {Ma} and F. {Yang} and S. {Liu} and W. {Ding} and J. {Song}},
  journal={IEEE Wireless Communications Letters}, 
  title={Structured Compressive Sensing-Based Channel Estimation for Time Frequency Training OFDM Systems Over Doubly Selective Channel}, 
  year={2017},
  volume={6},
  number={2},
  pages={266-269},
  doi={10.1109/LWC.2017.2669974}}