NDLI: Stabilised blind interference suppression of constant modulus-based adaptive array over Rayleigh fading channels by initial antenna selection

Content Provider	IET Digital Library
Author	Maruta, Kazuki Ahn, Chang Jun
Abstract	This article proposes an initial antenna selection for constant modulus-based blind interference suppression algorithms to stabilise their prominent interference suppression performance. Constant modulus algorithm (CMA) is a well-known blind adaptive array scheme, but it cannot suppress the interference when signal-to-interference power ratio (SIR) is <0 dB. It faces strong limits on their applicable region over Rayleigh fading channels where instantaneous channel gain fluctuates over 10 dB range. Even if the expected desired signal strength is larger than interference, CMA may still miscapture the interference and incorrectly suppress the desired signal. The authors’ proposal is simplified approach to select the antenna element whose reception power is maximal. Certain antenna element can be expected to capture the desired signal precisely under the condition where SIR is statistically positive, so that the CMA processor can utilise it as an initial input. This condition will be ensured by increasing antenna element number, supported by the trends that base station antenna elements are going massive. Computer simulations verifies improved interference suppression performance provided by the proposed scheme. This article also verified applicability for multi-modulus algorithm to accommodate M-ary quadrature amplitude modulation (QAM) use.
Starting Page	1876
Ending Page	1882
Page Count	7
ISSN	17518725
Volume Number	13
e-ISSN	17518733
Issue Number	Issue 11, Sep (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/13/11
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2018.5795
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2019-05-20
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Adaptive Antenna Array Antenna Array Base Station Antenna Element CMA Constant Modulus Algorithm Constant Modulus-based Adaptive Array Scheme Constant Modulus-based Blind Interference Suppression Algorithm Electromagnetic Compatibility Initial Antenna Selection Instantaneous Channel Gain Fluctuation Interference Interference Suppression Interference Suppression Performance M-ary Quadrature Amplitude Modulation Modulation And Coding Method Multimodulus Algorithm QAM Quadrature Amplitude Modulation Radio Frequency Interference Radio Link And Equipment Radio Reception Rayleigh Channel Rayleigh Fading Channel Signal-to-interference Power Ratio SIR Stabilised Blind Interference Suppression
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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