Network assisted inter-cell codeword cancellation for interference-limited LTE-A and beyond

Network assisted interference cancellation and suppression (NAICS) is being studied for 3GPP LTE-A to mitigate interference in multi-cell networks. To accomplish this goal, various interference mitigation techniques have been proposed. Contrary to conventional techniques, a rate splitting technique splits the interference in a way that part of the interference can be canceled at users through base station coordination. Rate splitting has been shown to have potential to achieve the channel capacity. This paper studies the benefits of the rate splitting scheme and proposes a new inter-cell codeword cancellation scheme for 3GPP LTE-A and beyond. Simulation results for interference-limited LTE-A scenarios show that the inter-cell codeword cancellation can be a very attractive interference coordination scheme due to its low complexity, low overhead and superior performance.