On the Achievable Diversity Multiplexing Tradeoff for Dynamic and Static DF in the Two-Way Channel
In this letter, dynamic <i>decode-and-forward</i> (DDF) protocol and static <i>decode-and-forward</i> (SDF) protocol are considered in a two-way half-duplex fading system, where two sources are equipped with multiple antennas and a relay is equipped with a single antenna. Their closed-form expressions of diversity multiplexing tradeoff (DMT) are derived, respectively. From the results, DDF always outperforms SDF in terms of DMT, achieves DMT gain over nonorthogonal <i>amplify-and-forward</i> (NAF) in low spectral efficiency scenarios, but is inferior to NAF in high spectral efficiency scenarios.
- IEICE transactions on fundamentals of electronics, communications and computer sciences
IEICE transactions on fundamentals of electronics, communications and computer sciences 94(10), 2063-2067, 2011-10-01
The Institute of Electronics, Information and Communication Engineers