IEEE Transactions on Wireless Communications, Volume 7, N°5, May 2008
We develop and analyze new cooperative strategies for ad hoc networks that are more spectrally efficient than classical Decode & Forward (DF) protocols. Using analog network coding, our strategies preserve the practical half-duplex assumption but relax the orthogonality constraint. The introduction of interference due to non-orthogonality is mitigated thanks to precoding, in particular Dirty Paper coding. Combined with smart power allocation, our cooperation strategies allow to save time and lead to a more efficient use of the bandwidth and to improved network throughput with respect to classical Repetition-DF and Parallel-DF
Type:
Journal
Date:
2008-05-01
Department:
Systèmes de Communication
Eurecom Ref:
2436
Copyright:
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