Fundamentals of statistical signal processing: estimation theory
Fundamentals of statistical signal processing: estimation theory
Training-based MIMO channel estimation: a study of estimator tradeoffs and optimal training signals
IEEE Transactions on Signal Processing
Channel Estimation for Amplify and Forward Relay Based Cooperation Diversity Systems
IEEE Transactions on Wireless Communications
On channel estimation and optimal training design for amplify and forward relay networks
IEEE Transactions on Wireless Communications - Part 2
MMSE whitening and subspace whitening
IEEE Transactions on Information Theory
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
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In this paper, we consider an AF relaying system without direct channel between the source node and the destination node, and use superimposed pilots to estimate the overall channel state information (CSI). Considering the superimposed pilot-interference (SPI) at the destination node is useful for channel estimation and data detection because the pilots and the data undergo the same channel fading due to superimposed sending, we utilize SPI to estimate CSI and detect the sending data. Simulation results show that our proposed method improves the spectral efficiency and obtain the satisfactory performance because of using superimposed pilots instead of traditional pilots.