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Blind Integer-Forcing Interference Alignment for Downlink Cellular Networks
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DOI：10.1109/LCOMM.2018.2878525.png)
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Abstract
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A novel blind interference alignment (IA) scheme in conjunction with interference decoding by virtue of integer forcing is proposed for downlink cellular networks without channel state information at the base station. In the proposed scheme, inter-user interference at each mobile user is aligned in blind manner, and by employing the same lattice code for all users, each user directly decodes integer-linear combinations of interfering codewords from the aligned interference signals in contrast to the previous works that simply null out the aligned interference by zero forcing. Numerical simulations demonstrate that the proposed scheme significantly improves the sum rate compared with the previous blind IA schemes.
Keywords:
Blind interference alignment
downlink cellular network
integer forcing
interference management
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