Factor Graph Aided Multiple-Symbol Differential Detection in the Broadcasting Phase of a Network Coding Based UWB Relay System

Lv, Tiejun; Wang, Chanfei; Gao, Hui

doi:10.1109/tvt.2016.2623652

Cited by 5 publications

(4 citation statements)

References 34 publications

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“…From the perspective of power efficiency, two-way relay transmission (TWRT) is considered by exploiting network coding to enhance the efficiency of one-way transmission [5]. However, estimating the carrier phase brings high complexity with coherent detection at the relay.…”

Section: Introductionmentioning

confidence: 99%

Lattice-reduction aided multiple-symbol differential detection in two-way relay transmission

Wang¹,

Cao²

2020

Turk J Elec Eng & Comp Sci

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Multiple-symbol differential detection (MSDD) algorithms are proposed in two-way relay transmission (TWRT). Firstly, generalized likelihood ratio test based MSDD (GLRT-MSDD) is proposed in TWRT. Unfortunately, as the number of observation windows increases, the computational complexity of GLRT-MSDD increases exponentially. Hence, this detection in TWRT constitutes a challenging problem. Moreover, we find a way to reformulate the GLRT-MSDD model and additionally propose a lattice-reduction aided MSDD (LR-MSDD) model. Performance analysis and simulations show that the proposed LR-MSDD provides bit-error rate performance close to that of GLRT-MSDD with lower complexity in TWRT.

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Section: Introductionmentioning

confidence: 99%

Lattice-reduction aided multiple-symbol differential detection in two-way relay transmission

Wang¹,

Cao²

2020

Turk J Elec Eng & Comp Sci

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“…Recently, a symbol by symbol noncoherent detection is presented in TWRT with binary continuous phase frequency shift keying in [9]. Furthermore, MSDD has been introduced in TWRT modulated with frequency shift keying [10] and also investigated in ultrawideband (UWB) impulse TWRT [11].…”

Section: Introductionmentioning

confidence: 99%

“…Specifically, a generalized likelihood ratio test (GLRT) aided MSDD, dubbed GLRT-MSDD, is proposed firstly. It is interesting to point out that, when compared to the existing MSDDs advocated in the noncoherent TWRT [10,11], the system performance is significantly improved by employing the DSTBC with the proposed GLRT-MSDD. However, it imposes an exponentially increasing complexity with the number of the observation windows.…”

Section: Introductionmentioning

confidence: 99%

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Decision‐Feedback Aided Multiple‐Symbol Differential Detection in Two‐Way Relay Transmission

Wang

Chen

2019

Mathematical Problems in Engineering

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In this paper, noncoherent transmission algorithms are proposed in a two-way relay transmission (TWRT), where differential space-time block codes based multiple-symbol differential detection (MSDD) is performed. Specifically, generalized likelihood ratio test aided MSDD (GLRT-MSDD) is developed with the exhaustive search in the TWRT. In order to solve the challenging problem of high complexity, the GLRT-MSDD model is reformulated and a decision-feedback aided MSDD (DF-MSDD) model is derived. Furthermore, performance analysis and the simulations confirm that the proposed DF-MSDD provides solid bit error-rate performance with a lower complexity than GLRT-MSDD in the TWRT.

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Power Allocation for D2D Communications Using Max-Min Message-Passing Algorithm

Rashed

Asvadi

Rajabi

et al. 2020

IEEE Trans. Veh. Technol.

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The approach of factor-graphs (FGs) is applied in the context of power control and user pairing in Device-to-Device (D2D) communications as an effective underlay concept in wireless cellular networks. D2D communications can increase the spectral efficiency of wireless cellular networks by establishing a direct link between devices with limited help from the evolved node base stations (eNBs). A well-designed user pairing and power allocation scheme with low complexity can remarkably improve the system's performance. In this paper, a simple and distributed FG based approach is utilized for power control and user pairing implementation in an underlay cellular network with D2D communications. A max-min criterion is proposed to maximize the minimum rate of all active users in the network, including the cellular and multiple D2D co-channel links in the uplink direction. An associated message-passing (MP) algorithm is presented to distributedly solve the resultant NP-hard maximization problem, with a guaranteed convergence compared to game theoretic and Q-learning based methods. The complexity and convergence of the proposed method is analyzed and numerical results confirm that the proposed scheme outperforms alternative algorithms in terms of complexity, while keeping the sum-rate of users nearly the same as centralized counterpart methods.

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Factor Graph Aided Multiple-Symbol Differential Detection in the Broadcasting Phase of a Network Coding Based UWB Relay System

Cited by 5 publications

References 34 publications

Lattice-reduction aided multiple-symbol differential detection in two-way relay transmission

Lattice-reduction aided multiple-symbol differential detection in two-way relay transmission

Decision‐Feedback Aided Multiple‐Symbol Differential Detection in Two‐Way Relay Transmission

Power Allocation for D2D Communications Using Max-Min Message-Passing Algorithm

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