Feasibility of Interference Alignment for Reverse Duplex in MIMO Cellular Networks with One-side Base Cooperation

Title & Authors
Feasibility of Interference Alignment for Reverse Duplex in MIMO Cellular Networks with One-side Base Cooperation
Kim, Kiyeon; Jeon, Sang-Woon; Yang, Janghoon; Kim, Dong Ku;

Abstract
The feasibility conditions of interference alignment (IA) are analyzed for reverse duplex systems, in which one cell operates as downlink (DL) while the other cell operates as uplink (UL) assuming one-sid base station (BS) cooperation. Under general multiple-input and multiple-output (MIMO) antenna configurations, a necessary condition and a sufficient condition for one-shot linear IA are established, i.e., linear IA without symbol or time extension. In several example networks, optimal sum degrees of freedom (DoF) is characterized by the derived necessary condition and sufficient condition. For some special class of networks, a sufficient condition is established in a more compact expression, which also yields the necessary and sufficient condition. Simulation results demonstrate that the proposed IA does not only achieve larger DoF but also significantly improves the sum rate in the practical signal-to-noise ratio (SNR) regime.
Keywords
MIMO;degrees of freedom;interference alignment;full-duplex;feasibility;
Language
Korean
Cited by
1.
기지국 협력 Device-to-Device 통신 전송 프로토콜 연구,전상운;최상원;김주엽;신원용;

한국통신학회논문지, 2016. vol.41. 11, pp.1619-1629
2.
전이중 셀룰라 시스템의 간섭 제어에 관한 최근 연구 동향,전상운;

한국통신학회논문지, 2015. vol.40. 7, pp.1266-1275
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