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Communication Dans Un Congrès Année : 2012

Interference alignment: improved design via precoding vectors

Résumé

The degree of freedom of the Single Input Single Output (SISO) fading interference channel is asymptotically upperbounded by K/2. This upperbound can be achieved using the Interference Alignment approach (IA), proposed by Cadambe et al.. In this work, a new optimized design of the IA scheme is presented. It involves introducing, for each user, a combination matrix so as to maximize the sum rate of the network. The optimal design is obtained via an iterative algorithm proposed in the K-user IA network, and a convergence to a local optimum is achieved. Numerical results enable us to evaluate the performance of the new algorithm and to compare it with other designs.

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Dates et versions

hal-00725649 , version 1 (27-08-2012)

Identifiants

  • HAL Id : hal-00725649 , version 1

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Yasser Fadlallah, Abdeldjalil Aissa El Bey, Karine Amis Cavalec, Ramesh Pyndiah. Interference alignment: improved design via precoding vectors. VTC 2012: 75th IEEE Vehicular Technology Conference, May 2012, Yokohama, Japan. ⟨hal-00725649⟩
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