An algebraic approach to network coding
IEEE/ACM Transactions on Networking (TON)
LLR-Based Decode-and-Forward Protocol for Relay Networks and Closed-Form BER Expressions
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Coding for MIMO Communication Systems
Coding for MIMO Communication Systems
MIMO-Assisted hard versus soft decoding-and-forwarding for network coding aided relaying systems
IEEE Transactions on Wireless Communications
Controlling error propagation in network-coded cooperative wireless systems
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Modulation and demodulation for cooperative diversity in wireless systems
IEEE Transactions on Wireless Communications
IEEE Transactions on Information Theory
IEEE Transactions on Information Theory
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
IEEE Transactions on Information Theory
Cooperative Strategies and Capacity Theorems for Relay Networks
IEEE Transactions on Information Theory
The three-node wireless network: achievable rates and Cooperation strategies
IEEE Transactions on Information Theory
A Network Coding Approach to Cooperative Diversity
IEEE Transactions on Information Theory
Broadcast Capacity Region of Two-Phase Bidirectional Relaying
IEEE Transactions on Information Theory
Fading relay channels: performance limits and space-time signal design
IEEE Journal on Selected Areas in Communications
Distributed Turbo Coding With Soft Information Relaying in Multihop Relay Networks
IEEE Journal on Selected Areas in Communications
Optimal relay functionality for SNR maximization in memoryless relay networks
IEEE Journal on Selected Areas in Communications
Joint network/channel decoding for heterogeneous multi-source/multi-relay cooperative networks
Proceedings of the 5th International ICST Conference on Performance Evaluation Methodologies and Tools
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In relay networks, error propagation at the relay nodes degrades the performance of the system. To combat that effect, it has been suggested to implement a reliability threshold at the relay to control error propagation. Specifically, the relay calculates log-likelihood ratio (LLR) values for the bits sent from the source. These values are subjected to a threshold to selectively forward bits that are most reliable and discard bits that are less so, resulting in less errors propagating to the destination. We investigate the application of this technique to a network-coded two-way relay channel where the relay is assisting two sources simultaneously. We first consider network-coded systems without channel coding, and then consider network-channel coded systems. We examine two modes of thresholding, one based on the individual bits, and the other based on the combined bits. We provide the full analysis for the bit-error rate (BER) performance of both thresholding modes and optimize the thresholds accordingly. We demonstrate that the optimum thresholds based on both modes give similar performances and are far better than the case of no thresholding. We also consider the performance of the proposed thresholding techniques for network-channel coded systems. We present several numerical examples that illustrate the efficacy of employing thresholding at the relay nodes (for networks with and without channel coding).