Low-complexity interference cancellation algorithms for detection in media-based modulated uplink massive-MIMO systems

Manish Mandloi () and Devendra Singh Gurjar ()
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Manish Mandloi: SVKM’s NMIMS (Deemed to be University) Shirpur Campus
Devendra Singh Gurjar: National Institute of Technology Silchar

Telecommunication Systems: Modelling, Analysis, Design and Management, 2021, vol. 77, issue 1, No 7, 129-142

Abstract: Abstract Media-based modulation (MBM) is a novel modulation technique that can improve the spectral efficiency of the existing wireless systems. In MBM, multiple radio frequency (RF) mirrors are placed near the transmit antenna(s) and are switched ON/OFF to create different channel fade realizations. In such systems, additional information is conveyed through the ON/OFF status of RF mirrors along with conventional modulation symbols. A challenging task at the receiver is to detect the transmitted information symbols and extract the additional information from the channel fade realization used for transmission. In this paper, we consider a massive MIMO (mMIMO) system where each user relies on MBM for transmitting information to the base station, and investigate the problem of symbol detection at the base station. First, we propose a mirror activation pattern (MAP) selection based modified iterative sequential detection algorithm. With the proposed algorithm, the most favorable MAP is selected, followed by the detection of symbol corresponding to the selected MAP. Each solution is subjected to the reliability check before getting the update. Next, we introduce a K favorable MAP search based iterative interference cancellation (KMAP-IIC) algorithm. In particular, a selection rule is introduced in KMAP-IIC for deciding the set of favorable MAPs over which iterative interference cancellation is performed, followed by a greedy update scheme for detecting the MBM symbols corresponding to each user. Simulation results show that the proposed detection algorithms exhibit superior performance-complexity trade-off over the existing detection techniques in MBM-mMIMO systems.

Keywords: Media-based modulation; RF mirrors; Massive MIMO; Iterative interference cancellation; Structured sparsity; Channel hardening (search for similar items in EconPapers)
Date: 2021
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DOI: 10.1007/s11235-020-00745-y

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