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Sensors 2018, 18(2), 380; doi:10.3390/s18020380

Joint Interference Alignment and Power Allocation for K-User Multicell MIMO Channel through Staggered Antenna Switching

Department of Electronics and Information Engineering, Chonbuk National University, Jeonju 561-756, Korea
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Received: 10 December 2017 / Revised: 24 January 2018 / Accepted: 24 January 2018 / Published: 28 January 2018
(This article belongs to the Section Sensor Networks)
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Abstract

In this paper, we characterise the joint interference alignment (IA) and power allocation strategies for a K-user multicell multiple-input multiple-output (MIMO) Gaussian interference channel. We consider a MIMO interference channel with blind-IA through staggered antenna switching on the receiver. We explore the power allocation and feasibility condition for cooperative cell-edge (CE) mobile users (MUs) by assuming that the channel state information is unknown. The new insight behind the transmission strategy of the proposed scheme is premeditated (randomly generated transmission strategy) and partial cooperative CE MUs, where the transmitter is equipped with a conventional antenna, the receiver is equipped with a reconfigurable multimode antenna (staggered antenna switching pattern), and the receiver switches between preset T modes. Our proposed scheme assists and aligns the desired signals and interference signals to cancel the common interference signals because the received signal must have a corresponding independent signal subspace. The capacity for a K-user multicell MIMO Gaussian interference channel with reconfigurable multimode antennas is completely characterised. Furthermore, we show that the proposed K-user multicell MIMO scheduling and K-user L-cell CEUs partial cooperation algorithms elaborate the generalisation of K-user IA and power allocation strategies. The numerical results demonstrate that the proposed intercell interference scheme with partial-cooperative CE MUs achieves better capacity and signal-to-interference plus noise ratio (SINR) performance compared to noncooperative CE MUs and without intercell interference schemes. View Full-Text
Keywords: blind interference alignment; multiple-input multiple-output (MIMO); Gaussian interference channel; reconfigurable multimode antenna blind interference alignment; multiple-input multiple-output (MIMO); Gaussian interference channel; reconfigurable multimode antenna
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MDPI and ACS Style

Selvaprabhu, P.; Chinnadurai, S.; Sarker, M.L.; Lee, M.H. Joint Interference Alignment and Power Allocation for K-User Multicell MIMO Channel through Staggered Antenna Switching. Sensors 2018, 18, 380.

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