Research on Channel Estimation Algorithm in OFDM-PNC Relay System
Zhao Dong-la · Radio and communications technology · 2015
Physical layer network coding( PNC) has became an important research topic due to its ability to improve the network throughput and reduce transmission delay. In order to make up for the performance loss of PNC in frequency selective fading channel,OFDM modulation technique is applied to the physical layer network coding,constitutes the OFDM-PNC system. This paper mainly studies the channel estimation technology of OFDM-PNC relay system,using Matlab to simulate the estimation performance of least square( LS),minimum mean square error( MMSE) and singular value decomposition( SVD) channel estimation algorithm. The simulation results verify the theoretical analysis.