Channel Estimation for Two-Way Relay OFDM Networks
Weiwei Yang, Weiwei Yang, Yueming Cai, Junquan Hu, Wendong Yang, Wendong Yang · EURASIP Journal on Wireless Communications and Networking · 2010
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.