Security and Reliability Analysis of Satellite-Terrestrial Multirelay Networks With Imperfect CSI

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In this paper, we evaluate short packet communication (SPC) for a cooperative system where one relay assists data transmission between one multi-antenna source and one single antenna destination with the presence of co-channel interference at the relay. Two transmission schemes, i.e., transmit antenna selection (TAS) scheme and beamforming scheme (BS), are considered. Based on metric of SPC, we derive the average block error rate (BLER) for the system in asymptotic and closed-form expressions for both schemes. In addition, a solution of optimal power allocation (OPA) to maximize end-to-end effective system throughput is proposed. Effects of parameters such as total transmit power, number of the source's antennas, number of co-channel interference, and packet length on the performance of the system are evaluated. Finally, the results reveal that the performance of the OPA scheme outperforms that of the benchmark scheme, i.e., equal power allocation solution, in terms of BLER and the effective throughput for both the TAS and BS schemes. Moreover, the performance of the system reaches to saturation value with more antennas at the source. The findings indicate that the TAS and BS schemes have the same performance in terms of both the BLER and the effective throughput.INDEX TERMS block error rate, cooperative system, co-channel interference, short packet communications. I. INTRODUCTIONRecently, short packet communication (SPC) has been considered as an important technique for achieving low latency in wireless communication systems, and it has been widely studied in literature. Several scenarios such as cognitive radio networks [1], device-to-device (D2D) networks [2], unmanned-aerial-vehicle (UAV) networks [3,4], relaying systems [5,6,7] have been investigated in SPC systems.Furthermore, many applications where the transmitter and destination nodes cannot communicate directly with each other. Relaying communication is a technique in wireless communication where an intermediate device is used to forward data packets between the transmitter and the receiver [8,9]. The relaying device, also known as a relay node or relay station, receives the information from the transmitter and re-transmits it to the receiver. Two well-known protocols such as decode-and-forward (DF), and amplify-and-forward (AF) [10,11] have been used in cooperative networks. An evaluation of the AF relay system performance with taking into account interference at the relay was discussed in [12]. Inspired by [12], outage performance of an AF system under

Section: Information In the First Time-slotmentioning

confidence: 99%

“…However, it is difficult to determine the solution to Problem P 2 when substituting (18) into (25) since CDF in ( 15) is complicated. To overcome this issue, we provide the following Lemma.…”

Section: Power Control Issuementioning

confidence: 99%

Short Packet Communications for Relay Systems With Co-Channel Interference at Relay: Performance Analysis and Power Control

Nguyen,

Le Anh,

Nguyen

et al. 2024

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“…The channel fading factor, | hs | 2 , characterizes the impact of scattering and masking effects induced by barriers and obscuration around terrestrial cells in satellite communications [24]- [27]. To accurately depict the distribution of | hs | 2 , we adopt the well-established shadowed-Rician fading channel model, which has been proved to be an accurate and practical model for the satellite-to-terrestrial channel in the existing research works [23], [24], [28], [29]. Specifically, the probability density function (P.D.F) of | hs | 2 follows [29, Eq.…”

Section: B Statistical Channel Modelmentioning

confidence: 99%

Dynamic Resource Allocation for Multi-Satellite Cooperation Networks: A Decentralized Scheme Under Statistical CSI

Zhao,

Yu,

Pan

et al. 2024

The densification of low-Earth orbit (LEO) constellations and the development of inter-satellite links enable the cooperative transmission of multiple satellites. This paper investigates a decentralized resource allocation strategy for multi-satellite cooperation networks under statistical channel state information (CSI). Our formulation aims at minimizing the total matching error between non-uniform traffic requests and achievable throughput by jointly optimizing transmit power and beam illumination pattern. The original problem is a stochastic mixed-integer quadratic programming with the long-term accumulation nature, whose stochastic objective is first addressed by incorporating the outage probability constraint. Then we decompose the deterministic problem into a series of single-timeslot subproblems on the greedy basis, each of which is further decomposed for each satellite following the decentralized decision principle with a limited number of inter-satellite interactions required to obtain the overall resource allocation. Finally, the optimization problem at each satellite is solved by sequential quadratic programming (SQP)-based alternating optimization algorithm that iterates between the transmit power allocation and beam illumination design. Numerical results show the effectiveness of the proposed decentralized algorithm in reducing the total matching error by at least 27% over other baseline approaches.

“…The authors in [13] presented the relay selection as well as round-robin scheduling schemes for the physical-layer security (PLS) in HSTRN, where secrecy performance has been analyzed with the decode and forward (DF) relaying protocol. To evaluate the security and reliability for a satellite-terrestrial network with multiple ground relays in the presence of an eavesdropper, the authors in [14] deployed a friendly jammer and an amplify-and-forward based relaying scheme to subtract the consequence of the eavesdropper on system performance. In [15], the authors investigated the ergodic capacity (EC) in HSTRN with adopted amplify-and-forward (AF) relaying protocol.…”

Section: A Relate Workmentioning

confidence: 99%

Performance Analysis of NOMA-Based Hybrid Satellite-Terrestrial Relay System Using mmWave Technology

Nguyen

et al. 2023

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This paper investigates the performance of NOMA-based hybrid Satellite-Terrestrial relays system (HSTR) using the millimeter wave (mmWave) technology. Furthermore, the relays are equipped with multiple antennas and utilize the amplify and forward (AF) protocol to forward the satellite's superimposed information to multiple destinations. Then, the rain coefficient is considered as the fading factor of the mmWave band to choose the best relay. We considered the shadowed-Rician fading and Nakagami-m fading for satellite links and terrestrial links respectively, and in addition, we evaluated the shadowing effect for satellite links with two modes of: frequent heavy shadowing (FHS) and average shadowing (AS). With these suggestions, the closed-form outage probability (OP) and approximate ergodic capacity (EC) are derived to evaluate the efficiency of the proposed system. Next contribution of the research is an asymptotic analysis for the OP, which is derived in order to gain additional insight into important system parameters. Finally, the theoretical derivation is validated through simulation results and analyzed the impact of significant parameters. These results demonstrate NOMA's superiority to the traditional orthogonal multiple access (OMA) method in the proposed system.INDEX TERMS NOMA, hybrid satellite-terrestrial relay system, millimeter wave, rain attenuation, outage probability, ergodic capacity. I. INTRODUCTIONRecently, satellite communication (SatCom) has been one of the potential technologies for the fifth generation (5G) network and beyond, which brings many advantages such as high throughput, great reliability, extensive coverage, inexpensive operations, and energy-efficient [1], [2], [3]. Therefore, the integration of SatCom into current terrestrial communication systems has received considerable attentionThe associate editor coordinating the review of this manuscript and approving it for publication was Abdel-Hamid Soliman .