User-Relay Duality in Cyclic Interference Alignment for Cascaded Two-Way Relay Networks


H. Maier, R. Mathar,


        We investigate a cascaded two-way relay network with K users and K relays alternately arranged in terms of a conceptual channel model based on polynomial rings. This channel model is inspired by cyclic codes and can be applied to time interference alignment by propagation delay for instance. A multiple-unicast problem for both the open-loop case, i. e., a straight line network of alternately arranged users and relays, and the corresponding closed-loop topology is considered. We provide an upper bound on the degrees of freedom which is achieved by means of signal alignment and interference alignment. Moreover, we observe a dual relationship for the closed-loop network if the roles of users and relays are swapped.

BibTEX Reference Entry 

	author = {Henning Maier and Rudolf Mathar},
	title = "User-Relay Duality in Cyclic Interference Alignment for Cascaded Two-Way Relay Networks",
	pages = "471-475",
	booktitle = "{IEEE} International Symposium on Information Theory and Its Applications (ISITA 2014)",
	address = {Melbourne, VIC, Australia},
	month = Oct,
	year = 2014,
	hsb = hsb999910369202 ,


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