Research Article

Near Optimum Power Control and Precoding under Fairness Constraints in Network MIMO Systems

Figure 8

Power consumption without precoding in Case and in Case . In Case , the lowest SINR must be at least half of the highest SINR MS. The point that satisfies this (and the capacity) constraint and minimizes the sum power is indicated on the right-hand side figure. With this constraint, the sum power is much higher than in the unconstraint case. Realistically, this fairness case is not feasible due to typical individual power limitations (24 dBm).
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