Linear Transceiver Design for an Amplify-and-Forward Relay Based on the MBER Criterion

Dutta, Amit Kumar; Hari, K.V.S.; Hanzo, Lajos

doi:10.1109/tcomm.2014.2350973

Cited by 14 publications

(10 citation statements)

References 24 publications

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“…This is in contrast to [12], where the number of users was fixed while varying N . Also, here we fix α = 1 3 . We begin our investigation by setting the large scale fading parameter…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…R ELAY-based co-operative communication provides reliable links for users who do not have a direct link to communicate among themselves [1], [2]. Conventional relaying, commonly known as one-way relaying [1], achieves this objective but requires four distinct time/frequency channel uses for bi-directional communication between two users. By contrast, two-way relaying (TWR) only requires two channel uses for bidirectional communication [3], [4], hence improves the system's spectral efficiency compared to one-way relaying.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Quantized MRC-MRT Precoder For FDD Massive MIMO Two-Way AF Relaying

Dutta

Budhiraja

Koilpillai

et al. 2019

IEEE Trans. Commun.

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The maturing massive multiple-input multipleoutput (MIMO) literature has provided asymptotic limits for the rate and energy efficiency (EE) of maximal ratio combining /maximal ratio transmission (MRC-MRT) relaying on two-way relays (TWR) using the amplify-and-forward (AF) principle. Most of these studies consider time division duplexing, and a fixed number of users. To fill the gap in the literature, we analyze the MRC-MRT precoder performance of a N-antenna AF massive MIMO TWR, which operates in frequency division duplex mode to enable two-way communication between 2M = ⌊N α ⌋ singleantenna users, with α ∈ [0, 1), divided equally in two groups of M users. We assume that the relay has realistic imperfect uplink channel state information (CSI), and that quantized downlink CSI is fed back by the users relying on B ≥ 1 bits peruser per relay antenna. We prove that for such a system with α ∈ [0, 1), the MRC-MRT precoder asymptotically cancels the multiuser interference (MUI) when the supremum and infimum of large scale fading parameters is strictly non-zero and finite, respectively. Furthermore, its per-user pairwise error probability (PEP) converges to that of an equivalent AWGN channel as both N and the number of users 2M = ⌊N α ⌋ tend to infinity, with a relay power scaling of Pr = 2M Er N and Er being a constant. We also derive upper bounds for both the per-user rate and EE. We analytically show that the quantized MRC-MRT precoder requires as few as B = 2 bits to yield a BER, EE, and per-user rate close to the respective unquantized counterparts. Finally, we show that the analysis developed herein to derive a bound on α for MUI cancellation is applicable both to Gaussian as well as to any arbitrary non-Gaussian complex channels.

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“…This is in contrast to [12], where the number of users was fixed while varying N . Also, here we fix α = 1 3 . We begin our investigation by setting the large scale fading parameter…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Analysis of Quantized MRC-MRT Precoder For FDD Massive MIMO Two-Way AF Relaying

Dutta

Budhiraja

Koilpillai

et al. 2019

IEEE Trans. Commun.

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“…Although the benefits of the MEP-based MIMO-relaying 49 system have already been demonstrated in [9] in terms of an SNR gain 50 of up to 3-4 dB, in this treatise, our holistic CF is conceived in the 51 above mentioned scenarios equipped with MIMO configurations for 52 the first time.…”

mentioning

confidence: 99%

“…Here, we have opted for the PSD [10] for solving our constrained op-155 timization problem, because it was found beneficial in [9]. we present the complexity results only for the cognitive and for the 173 multihop relaying.…”

mentioning

confidence: 99%

Minimum Error Probability MIMO-Aided Relaying: Multihop, Parallel, and Cognitive Designs

Dutta

Hari

Murthy

et al. 2017

IEEE Trans. Veh. Technol.

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Quantum-Aided Multi-User Transmission in Non-Orthogonal Multiple Access Systems

et al. 2016

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With the research on implementing a universal quantum computer being under the technological spotlight, new possibilities appear for their employment in wireless communications systems for reducing their complexity and improving their performance. In this treatise, we consider the downlink of a rank-deficient, multi-user system and we propose the discrete-valued and continuous-valued quantumassisted particle swarm optimization (PSO) algorithms for performing vector perturbation precoding, as well as for lowering the required transmission power at the base station (BS), while minimizing the expected average bit error ratio (BER) at the mobile terminals. We use the minimum BER criterion. We show that the novel quantum-assisted precoding methodology results in an enhanced BER performance, when compared with that of a classical methodology employing the PSO algorithm, while requiring the same computational complexity in the challenging rank-deficient scenarios, where the number of transmit antenna elements at the BS is lower than the number of users. Moreover, when there is limited channel state information feedback from the users to the BS, due to the necessary quantization of the channel states, the proposed quantumassisted precoder outperforms the classical precoder.PANAGIOTIS BOTSINIS (S'12-M'15) received the M.Eng. degree from the School of Electrical and Computer Engineering,

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Linear Transceiver Design for an Amplify-and-Forward Relay Based on the MBER Criterion

Abstract: Abstract-A design methodology based on the Minimum Bit 5Error Ratio (MBER) framework is proposed for a non-regenera-

Cited by 14 publications

References 24 publications

Analysis of Quantized MRC-MRT Precoder For FDD Massive MIMO Two-Way AF Relaying

Analysis of Quantized MRC-MRT Precoder For FDD Massive MIMO Two-Way AF Relaying

Minimum Error Probability MIMO-Aided Relaying: Multihop, Parallel, and Cognitive Designs

Quantum-Aided Multi-User Transmission in Non-Orthogonal Multiple Access Systems

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