Propagation-Delay based Cyclic Interference Alignment with All Cases for Two-user X Channel

Feng Liu ； Xin Zhou

《International Core Journal of Engineering》 8卷6期 (2022/06) Pp. 586-592

https://doi.org/10.6919/ICJE.202206_8(6).0079

摘要

Cyclic interference alignment (IA) in temporal domain is important for the propagation delay (PD) based wilreless communication, which can help achieve the degrees of freedom (DoF). However, only few feasible PD channel structures have been reported for the typical two-user X channel, where two transmitters and two receivers are involved. In this paper, we investigate all feasible cases of PD channel structure, each of which achieves the DoF upper bound of 4/3. With the aid of computer, total 54 feasible PD structures are found. And one of them is demonstrated with the details of encoding, decoding, and IA pattern.

關鍵字

Cyclic Interference Alignment ； Two-user X Channel ； Propagation Delay ； Degrees of Freedom

參考文獻

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