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On Interference Alignment and the Deterministic Capacity for Cellular Channels with Weak Symmetric Cross Links (1104.0136v1)
Published 1 Apr 2011 in cs.IT and math.IT
Abstract: In this paper, we study the uplink of a cellular system using the linear deterministic approximation model, where there are two users transmitting to a receiver, mutually interfering with a third transmitter communicating with a second receiver. We give an achievable coding scheme and prove its optimality, i.e. characterize the capacity region. This scheme is a form of interference alignment which exploits the channel gain difference of the two-user cell.
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