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Published July 2006 | Published
Book Section - Chapter Open

Asymptotically Optimal Cooperative Wireless Networks without Constellation Expansion

Abstract

In this work, we construct a unified family of cooperative diversity coding schemes for implementing the orthogonal amplify-and-forward and the orthogonal selection-decode-and-forward strategies in cooperative wireless networks. We show that, as the number of users increases, these schemes meet the corresponding optimal high-SNR outage region, and do so with minimal order of signaling complexity. This is an improvement over all outage-optimal schemes which impose exponential increases in signaling complexity for every new network user. Our schemes, which are based on commutative algebras of normal matrices, satisfy the outage-related information theoretic criteria, the duplex-related coding criteria, and maintain reduced signaling, encoding and decoding complexities.

Additional Information

© 2006 IEEE. The work of F. Oggier is supported by the Swiss National Science Foundation.

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