Channel estimation for two-way relay OFDM networks

  • Authors:
  • Weiwei Yang;Yueming Cai;Junquan Hu;Wendong Yang

  • Affiliations:
  • Institute of Communications Engineering, PLA University of Science and Technology, Nanjing, China and National Mobile Communications Research Laboratory, Southeast University, Nanjing, China;Institute of Communications Engineering, PLA University of Science and Technology, Nanjing, China and National Mobile Communications Research Laboratory, Southeast University, Nanjing, China;Institute of Communications Engineering, PLA University of Science and Technology, Nanjing, China;Institute of Communications Engineering, PLA University of Science and Technology, Nanjing, China

  • Venue:
  • EURASIP Journal on Wireless Communications and Networking - Special issue on physical-layer network coding for wireless cooperative networks
  • Year:
  • 2010

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Abstract

We consider the channel estimation for two-way relay OFDM networks. We proposed an LS-based channel estimation algorithm under block-based training schemes. Based on the mean square error (MSE) criterion, the condition and the design method for optimal training sequences are discussed. To reduce peak-to-average power ratio (PAPR), a special sequence called Zadoff-Chu sequence is employed to design the optimal training sequence, which can achieve both minimum MSE performance and excellent PAPR performance.