Abstract
In Long Term Evolution (LTE) networks, two operators might deploy their networks based on frequency division multiplexing (FDD) and time division multiplexing (TDD) in the same geographical area utilizing adjacent frequency bands. In this kind of an environment, the mutual interference, also called adjacent channel interference (ACI), caused by the coexisting adjacent channels of those networks will result in capacity degradation in both systems. In this paper, we investigate the coexistence problem between two macrocells in LTE networks and propose a power allocation-based solution comprising two methods for the base station (BS)-to-BS ACI scenario. Compared to the guard band (GB)-based solution, the proposed methods offer higher spectrum efficiency and even better performance when the GB is equal to or narrower than 10 MHz.
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