In the wireless communication network, interference alignment (IA) represents a technology for the management of interference that can attain the optimum degrees of freedom (DoF). The iterative IA design is highly com...
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In the wireless communication network, interference alignment (IA) represents a technology for the management of interference that can attain the optimum degrees of freedom (DoF). The iterative IA design is highly complex and requires significant computing resources in multiple-user multiple-input multiple-output (MIMO) communication networks. The IA in closed-form design scheme has low complexity of computation, which hasn't been solved well in general multiple-user communication networks. A scheme in closed-form is proposed for the multi-user MIMO interference channel, in which an IA solution is employed to eliminate interference by the precoding sub-matrix chain and achieve the optimum DoF further. The precoding sub-matrix chain is precisely designed, and the exact solution in closed-form is obtained by the solution of linear equations. Eventually, the efficacy of the designed solution scheme is validated through simulation experiments.
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