Recent results show that sum-rate maximizing multicell power allocation promises significant gains in interferencelimited data networks. Finding practical, i.e. distributed, versions of this global optimization problem however remains a challenging task. In this work, we establish a general framework for the distributed power allocation problem for N mutually interfering links enabling us to derive a fully distributed power allocation algorithm. Although a gain for N = 2 is observed, a performance gap is still observed compared to a centralized algorithm. As a way to fill that gap, we propose minimal information (in this case 1 bit) message passing between interfering links to improve performance. Numerical results show these algorithms to exploit a substantial amount of the capacity gain offered by centralized optimization.
Capacity maximizing power allocation for interfering wireless links: a distributed approach
GLOBECOM 2007, 50th IEEE Global Communications Conference, November 26-30, 2007, Washington, USA
Systèmes de Communication
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