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The K -user cyclic interference channel can model one scenario in vehicular networks, where all the base stations are arranged along a highway. The k th user is interfered only by the ((k +1) mod K) th user in the K -user cyclic interference channel. The Han-Kobayashi scheme based rate region, the best inner bound known to date for the two-user interference channel, is extended to the K -user cyclic interference channel, which is obtained by simultaneously decoding the intended messages and a part of the interfered messages at the receiver. In this paper, the authors show that the simple successive interference cancellation decoding can also achieve this rate region.
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