Differentially-Encoded Rectangular Spatial Modulation Approaches the Performance of Its Coherent Counterpart

Xiao, Lixia; Xiao, Pei; Ruan, Hang; Ishikawa, Naoki; Lü, Lei; Xiao, Yao; Hanzo, Lajos

doi:10.1109/tcomm.2020.3021117

Cited by 16 publications

(18 citation statements)

References 36 publications

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“…The proposed scheme has a common structure with the conventional nonsquare differential scheme of [32][33][34]36]. It invokes a chaos-based time-varying basis and a chaos calibration algorithm.…”

Section: Proposed Chaos-based Differential Mimomentioning

confidence: 99%

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Artificially Time-Varying Differential MIMO for Achieving Practical Physical Layer Security

Ishikawa

Hamamreh

Okamoto

et al. 2021

IEEE Open J. Commun. Soc.

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In this paper, we propose a differential multiple-input multiple-output (MIMO) scheme based on the novel concept of chaos-based time-varying unitary matrices to demonstrate-for the first time in the literature-the ability of differential encoding in achieving practical physical layer security even without the need for using channel estimation. In the proposed scheme, an erroneous secret key, which is extracted from the wireless nature, is used to initialize a chaos sequence that is responsible for generating artificially time-varying unitary matrices capable of obfuscating the transmitted data symbols from illegitimate eavesdroppers. Contrary to conventional studies, the key agreement ratio in this study is assumed to be imperfect, which is often true and very realistic in high-mobility scenarios. Following this, we conceive a new calibration algorithm for reconciling the chaotic sequence generated at the legitimate parties, thus making this calibration algorithm a unique, novel solution to the key sharing problem of conventional chaos-based communication techniques, which has been overlooked over the past few decades. It is found out that differential encoding obviates additional complexity and insecurity in dealing with channel estimation, whereas an eavesdropper must tackle the complicated differentially encoded patterns, which have an exponentially increasing complexity order. In addition, the obtained simulation results demonstrate that the proposed scheme can outperform conventional chaos-based MIMO schemes that assume perfect channel knowledge.

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Section: Proposed Chaos-based Differential Mimomentioning

confidence: 99%

“…The pioneering scheme [30] established in the early 2000s relies on square unitary matrices. By contrast, in 2017, a new approach of nonsquare differential MIMO [32][33][34][35][36] was proposed. This new approach maps the classic unitary matrix to a nonsquare matrix, which benefically improves the transmission rate linearly.…”

Section: Introductionmentioning

confidence: 99%

Artificially Time-Varying Differential MIMO for Achieving Practical Physical Layer Security

Ishikawa

Hamamreh

Okamoto

et al. 2021

IEEE Open J. Commun. Soc.

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“…To unleash the potential of massive access in mMTC, spatial modulation based on multiple transmit antennas at the MTDs and massive multi-input multi-output (mMIMO) BSs were considered in [14], [23], and [24]. In particular, spatial modulation is a low-complexity and energy-efficient multipleantenna scheme that utilizes a single or fewer radio frequency (RF) chains than the number of antenna elements [25]- [28]. By encoding part of the information bits onto the activated antenna elements, spatial modulation is capable of enhancing the data rate at a low cost and low power consumption [26].…”

Section: A Related Workmentioning

confidence: 99%

Massive Access in Media Modulation Based Massive Machine-Type Communications

Li¹,

Zhang²,

Gao³

et al. 2021

Preprint

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The massive machine-type communications (mMTC) paradigm based on media modulation in conjunction with massive multi-input multi-output base stations (BSs) is emerging as a viable solution to support the massive connectivity for the future Internet-of-Things, in which the inherent massive access at the BSs poses significant challenges for device activity and data detection (DADD). This paper considers the DADD problem for both uncoded and coded media modulation based mMTC with a slotted access frame structure, where the device activity remains unchanged within one frame. Specifically, due to the slotted access frame structure and the adopted media modulated symbols, the access signals exhibit a doubly structured sparsity in both the time domain and the modulation domain. Inspired by this, a doubly structured approximate message passing (DS-AMP) algorithm is proposed for reliable DADD in the uncoded case. Also, we derive the state evolution of the DS-AMP algorithm to theoretically characterize its performance. As for the coded case, we develop a bit-interleaved coded media modulation scheme and propose an iterative DS-AMP (IDS-AMP) algorithm based on successive inference cancellation (SIC), where the signal components associated with the detected active devices are successively subtracted to improve the data decoding performance. In addition, the channel estimation problem for media modulation based mMTC is discussed and an efficient data-aided channel state information (CSI) update strategy is developed to reduce the training overhead in block fading channels. Finally, simulation results and computational complexity analysis verify the superiority of the proposed DS-AMP algorithm over state-of-the-art algorithms in the uncoded case. Also, our results confirm that the proposed SIC-based IDS-AMP algorithm can enhance the data decoding performance in the coded case and verify the validity of the proposed data-aided CSI update strategy.

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“…Besides, [23] presented STBC aided RDSM (STBC-RDSM) scheme for massive MIMO downlink communications, which combines RDSM and STBC to reap their respective advantages. The authors in [24] proposed a simplified RDSM scheme and assigned a new design metric for forgetting factor to mitigate error propagation.…”

Section: Introductionmentioning

confidence: 99%

Differential STBC-SM Scheme for Uplink Multi-User Massive MIMO Communications: System Design and Performance Analysis

Zhu

Xiao

et al. 2021

IEEE Trans. Veh. Technol.

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In this paper, a novel differential space-time block coded spatial modulation (differential STBC-SM) is proposed for uplink multi-user massive multiple-input multiple-output (MI-MO) communications, which combines the concept of differential coding and STBC-SM to enhance the diversity benefits in the absence of the channel state information (CSI). The transmission structure of the proposed system is on a block basis, where each block contains two sub-blocks. More specifically, the first sub-block only conveys amplitude and phase modulation (APM) symbol bits, since its transmit antennas (TAs) obey a pre-designed activation pattern, which do not carry any information bit. For the second sub-block, the input bits are modulated to STBC-SM matrices, which are then differentially coded between two adjacent sub-blocks. Moreover, a novel block-by-block based non-coherent detector is presented. Finally, we derive an upper bound on the average bit error probability (ABEP) by using the moment generating function (MGF). Our simulation results show that the proposed differential STBC-SM transmission structure is able to acquire considerable bit error rate (BER) performance improvements compared to both the conventional differential spatial modulation (DSM) and differential Alamouti schemes.

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Differentially-Encoded Rectangular Spatial Modulation Approaches the Performance of Its Coherent Counterpart

Cited by 16 publications

References 36 publications

Artificially Time-Varying Differential MIMO for Achieving Practical Physical Layer Security

Artificially Time-Varying Differential MIMO for Achieving Practical Physical Layer Security

Massive Access in Media Modulation Based Massive Machine-Type Communications

Differential STBC-SM Scheme for Uplink Multi-User Massive MIMO Communications: System Design and Performance Analysis

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