Abstract
Transparent coexistence, also known as underlay, offers much more efficient spectrum sharing than traditional interweave coexistence paradigm. In a previous work, the transparent coexistence for a multi-hop secondary networks is studied. In this paper, we design a distributed solution to achieve this paradigm. In our design, we show how to increase the number of data streams iteratively while meeting constraints in the MIMO interference cancelation (IC) model and achieving transparent coexistence. All steps in our distributed algorithm can be accomplished based on local information exchange among the neighboring nodes. Our simulation results show that the performance of our distributed algorithm is highly competitive when compared to an upper bound solution for the centralized problem.
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