On Optimal Constellation Shaping for Wireless MIMO Relay Networks Based on Complex Field Network Coding

Abstract:

Network Coding (NC) is a promising technique that can maximize the network throughput. Multiple-Input-Multiple-Output (MIMO) detection technique is always combined with NC because they are both based on a similar system description. Two-way relay channel (TWRC) is the most common scene for the research on NC. However, TWRC is not a general case since it requires both users have information to exchange simultaneously. In this paper, a more general system model which adds a destination node is proposed. Based on this scene, for symmetrical and asymmetrical modulation schemes, we maximize the minimum Euclidean distance of the superposed constellation. The destination node never needs to have a packet exchange with the relay. Excellent performance has been proved by the theory analysis and simulation results.

• Periodical: Applied Mechanics and Materials (Volumes 490-491)
• Pages: 1410-1414
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.490-491.1410
• Online since: January 2014
• Authors: Xin Zhou, Yi Jun Guo, Jian Jun Hao
• Keywords: Complex Field Network Coding, MIMO, Optimal Constellation Shaping, Wireless Relay Networks

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