Sparse channel estimation for OFDM-based underwater cooperative systems with amplify-and-forward relaying

Keyphrases

• Cooperative Systems 100%
• Orthogonal Frequency Division multiplexing 100%
• Amplify-and-forward Relay 100%
• Sparse Channel Estimation 100%
• Space-alternating Generalized Expectation-maximization 100%
• Matching Pursuit 66%
• Channel Estimation 66%
• Generalized Expectation-maximization Algorithm 66%
• Channel Taps 66%
• Novel Algorithm 33%
• Non-Gaussian 33%
• Challenging Problems 33%
• Fast Convergence 33%
• Tractability 33%
• Gaussian Mixture 33%
• Amplify-and-forward 33%
• Orthogonal Frequency Division multiplexing System 33%
• Non-Gaussian Noise 33%
• Relay-based 33%
• Channel Impulse Response 33%
• Noise Distribution 33%
• Performance Estimation 33%
• Hidden Data 33%
• Gaussian Mixture Model 33%
• Cooperative Relay 33%
• Distribution Parameter 33%
• Symbol Error Rate 33%
• Error Channel 33%
• Channel Estimation Algorithm 33%
• Sparse Structure 33%
• Low-complexity Algorithms 33%
• Error Rate Estimation 33%
• Sparse Channel 33%
• Sparse Underwater Acoustic Channel 33%
• Underwater Acoustic Channel 33%

Engineering

• Distribution Parameter 25%