When network coding and dirty paper coding meet in a cooperative ad hoc network

被引:17
作者
Fawaz, Nadia [1 ]
Gesbert, David [1 ]
Debbah, Merouane [2 ]
机构
[1] Eurecom Inst, Mobile Commun Dept, Sophia Antipolis, France
[2] Supelec, Alcatel Lucent Chair Flexible Radio, Gif Sur Yvette, France
关键词
cooperative communications; network coding; dirty paper coding; precoding; ad hoc network;
D O I
10.1109/TWC.2008.070786
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 [电气工程]; 0809 [电子科学与技术];
摘要
We develop and analyze new cooperative strategies for ad hoe 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.
引用
收藏
页码:1862 / 1867
页数:6
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