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New Approach for Relay and Transceiver Design for Interference Alignment in MIMO Interference Channels

DOI: 10.4236/jcc.2013.13001    3,112 Downloads   7,351 Views  

ABSTRACT

Wireless relaying has been known to provide the improvements in link reliability, spectral efficiency, and coverage extension. In this paper, we use full duplex relays for Interference Alignment (IA) in K-users Interference Channel (IC) and show K Degrees of Freedom (DOF) is achievable. In first hop, relays receive signals from transmitters and forward them to receivers in second hop. Two iteratively algorithms are proposed for computing relays function, precoder, and decoder matrices. First algorithm minimizes leakage interference at receivers that has appropriate performance at high Signal to Noise Ratio (SNR) region. Furthermore, the second algorithm has better performance at low-mediate SNR. The performance of proposed algorithms are compared with other schemes and validated with simulation in terms of achieved sum rate.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

Vaezy, H. and Vakili, V. (2013) New Approach for Relay and Transceiver Design for Interference Alignment in MIMO Interference Channels. Journal of Computer and Communications, 1, 1-7. doi: 10.4236/jcc.2013.13001.

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