Abstract
Two-way is a dominant mode of communication in wireless systems. Departing from the tradition to optimize each transmission direction separately, recent work has demonstrated that, for time-division duplex (TDD) systems, optimizing the schedule of the two transmission directions depending on traffic load and interference condition leads to performance gains. In this letter, a general network of multiple interfering two-way links is studied under the assumption of a balanced load in the two directions for each link. Using the notion of interference spin, we introduce an algebraic framework for the optimization of two-way scheduling, along with an efficient optimization algorithm that is based on the pruning of a properly defined topology graph and dynamic programming. Numerical results demonstrate multi-fold rate gains with respect to baseline solutions, especially for worst-case (5%-ile) rates.
Originalsprog | Engelsk |
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Tidsskrift | I E E E Communications Letters |
Vol/bind | 19 |
Udgave nummer | 3 |
Sider (fra-til) | 387-390 |
Antal sider | 4 |
ISSN | 1089-7798 |
DOI | |
Status | Udgivet - mar. 2015 |