IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Online ISSN : 1745-1337
Print ISSN : 0916-8508
Regular Section
A General Perfect Cyclic Interference Alignment by Propagation Delay for Arbitrary X Channels with Two Receivers
Conggai LIFeng LIUShuchao JIANGYanli XU
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2019 Volume E102.A Issue 11 Pages 1580-1585

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Abstract

Interference alignment (IA) in temporal domain is important in the case of single-antenna vehicle communications. In this paper, perfect cyclic IA based on propagation delay is extended to the K×2 X channels with two receivers and arbitrary transmitters K≥2, which achieves the maximal multiplexing gain by obtaining the theoretical degree of freedom of 2K/(K+1). We deduce the alignment and separability conditions, and propose a general scheme which is flexible in setting the index of time-slot for IA at the receiver side. Furthermore, the feasibility of the proposed scheme in the two-/three- Euclidean space is analyzed and demonstrated.

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© 2019 The Institute of Electronics, Information and Communication Engineers
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