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An improved interference alignment scheme for frequency selective channels
Shen, Minqi; Host-Madsen, Anders; Vidal Manzano, José
Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions; Universitat Politècnica de Catalunya. SPCOM - Grup de Recerca de Processament del Senyal i Comunicacions
In this paper, the achievable rate of a K-user interference channel with single antenna at individual node is studied. Interference alignment and zero forcing are applied at the transmitter and receiver, respectively. It is well known from the paper [1] of Cadambe and Jafar that a multiplexing gain (degrees of freedom) of K/2 is achievable. We propose two new pre-coding methods and study how they enhance the achievable rate in terms of the high SNR offset, while maintain the optimality of degree of freedom the Cadambe-Jafar scheme achieved.
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació
Antennas
Signal theory (Telecommunication)
Multiuser detection (Telecommunication)
Senyal, Teoria del (Telecomunicació)
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