Aeu-International Journal of Electronics and Communications最新文献

英文中文

Joint caching and power allocation with sequential demand prediction in wireless edge networks 基于顺序需求预测的无线边缘网络联合缓存和功率分配

IF 3.2 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications

Pub Date : 2025-11-13 DOI: 10.1016/j.aeue.2025.156136

Ida Nurcahyani , Jeong Woo Lee

The wireless edge network is considered a promising technology for reducing latency by efficiently caching popular content in edge stations. However, optimizing caching alone is insufficient, as power allocation also strongly impacts system performance under dynamic requests and wireless conditions. Their interdependence motivates a joint optimization of caching and power allocation to maximize the benefit of edge networks. This paper proposes a joint caching and power allocation framework that integrates request prediction, utility-aware caching decisions, and adaptive power allocation to minimize user-perceived latency. Each edge station predicts future user requests using recent request history, and the predicted requests serve as caching candidates. Using alternating optimization, caching decisions and transmit power allocation are determined under system constraints. Our framework consists of four functional units: user request prediction, joint caching and power allocation optimization for edge stations, latent vector update, and user power allocation. The numerical results under various network conditions and constrained storage capacity resources show that the proposed framework outperforms other strategies and reduces latency up to 31.51% compared to the baseline strategy. Overall, the framework consistently reduces latency in varying network conditions, offering an effective solution for content delivery in edge networks.

无线边缘网络被认为是一种很有前途的技术，可以通过在边缘站有效地缓存流行内容来减少延迟。然而，仅仅优化缓存是不够的，因为在动态请求和无线条件下，功率分配也会严重影响系统性能。它们的相互依赖性促使缓存和功率分配的联合优化，以最大限度地提高边缘网络的效益。本文提出了一个联合缓存和功率分配框架，该框架集成了请求预测、实用感知缓存决策和自适应功率分配，以最大限度地减少用户感知的延迟。每个边缘站使用最近的请求历史预测未来的用户请求，预测的请求作为缓存候选请求。采用交替优化方法，在系统约束条件下确定缓存决策和传输功率分配。我们的框架包括四个功能单元：用户请求预测、联合缓存和边缘站功率分配优化、潜在向量更新和用户功率分配。在各种网络条件和有限的存储容量资源下的数值结果表明，该框架优于其他策略，与基准策略相比，延迟降低了31.51%。总体而言，该框架在不同的网络条件下持续减少延迟，为边缘网络中的内容交付提供了有效的解决方案。

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引用次数: 0

Resource allocation for high-speed railway train-to-train communications: a novel AC-Mix reinforcement learning method 高速铁路列车间通信资源分配：一种新的交流混合强化学习方法

IF 3.2 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications

Pub Date : 2025-11-13 DOI: 10.1016/j.aeue.2025.156137

Yong Chen, Na Chen, Huaju Liu, Zhaofeng Xin

In the next-generation 5G-R high-speed railway communication system, the train-to-train (T2T) link can enhance system capacity and spectrum utilization by reusing the spectrum resources of the train-to-ground (T2G) link. However, this reuse introduces co-channel interference, reducing the overall system throughput. To address this issue, we propose a novel actor–critic mixing network (AC-Mix) reinforcement learning method for resource allocation, which optimizes the allocation of spectrum and power to reduce reuse interference and enhance system throughput. First, a T2T spectrum reuse model is established with the objective of maximizing system throughput. Then, non-orthogonal multiple access (NOMA) technology is employed for interference pre-processing to mitigate interference among users sharing the same resource block. Subsequently, the problem is modeled as a markov decision process (MDP), and the AC-Mix algorithm is used to select the optimal spectrum and power allocation strategy. The algorithm employs a value decomposition-based mixing network to decompose the global Q-value into a combination of local Q-values, reducing modeling complexity and ensuring consistent policy optimization through centralized policy gradient updates, and incorporates an LSTM network to utilize historical data for improved the accuracy of resource allocation decisions. Simulation results show that the proposed method can effectively increase system throughput, providing strong support for improving the performance of high-speed railway communication systems.

在下一代5G-R高速铁路通信系统中，列车对列车（T2T）链路可以通过重复利用列车对地面（T2G）链路的频谱资源，提高系统容量和频谱利用率。然而，这种重用引入了同信道干扰，降低了整个系统的吞吐量。为了解决这个问题，我们提出了一种新的参与者-评论家混合网络（AC-Mix）强化学习方法用于资源分配，该方法优化了频谱和功率的分配，以减少重用干扰并提高系统吞吐量。首先，以系统吞吐量最大化为目标，建立T2T频谱复用模型；然后，采用非正交多址（NOMA）技术进行干扰预处理，减轻共享同一资源块的用户之间的干扰；随后，将该问题建模为马尔可夫决策过程（MDP），并采用AC-Mix算法选择最优频谱和功率分配策略。该算法采用基于值分解的混合网络，将全局q值分解为局部q值的组合，降低建模复杂度，通过集中的策略梯度更新保证策略优化的一致性，并结合LSTM网络利用历史数据，提高资源分配决策的准确性。仿真结果表明，该方法能有效提高系统吞吐量，为提高高速铁路通信系统的性能提供有力支持。

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引用次数: 0

Enhancing SM MIMO performance under non-ideal transceiver hardware via full-duplex UAV and antenna selection 通过全双工无人机和天线选择提高非理想收发硬件条件下的SM MIMO性能

IF 3.2 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications

Pub Date : 2025-11-12 DOI: 10.1016/j.aeue.2025.156122

Sang-Quang Nguyen , Huu Minh Nguyen , Ngoc-Tuan Do , Ba Cao Nguyen , Bui Vu Minh , Nguyen Huu Khanh Nhan

This paper investigates the performance of an unmanned aerial vehicle (UAV)-assisted full-duplex (FD) relaying system with non-ideal transceiver hardware (NITH) and residual self-interference (RSI). In the proposed model, referred to as the UAV-NITH system, each terminal is equipped with multiple antennas. Spatial modulation (SM) is employed in the UAV-NITH system. Closed-form expressions for the outage probability (OP) and system throughput are derived for both transmit antenna selection (TAS) and non-TAS schemes. The analytical results are validated through Monte-Carlo simulations. The findings reveal that FD transmission significantly outperforms half-duplex (HD) in the low-to-moderate transmit power region, while TAS provides substantial gains, particularly under low impairment conditions. However, both RSI and NITH introduce error floors that limit performance at high transmit powers. Moreover, UAV mobility has a critical impact, as higher speeds drastically degrade reliability, while operation at millimeter-wave frequencies increases OP but can be mitigated by employing more antennas. Overall, the results highlight the advantages of FD relaying with TAS for UAV-assisted networks, while emphasizing the importance of interference suppression, hardware-aware design, and UAV speed control in future implementations.

研究了一种具有非理想收发器硬件（NITH）和残余自干扰（RSI）的无人机辅助全双工（FD）中继系统的性能。在提出的模型中，称为UAV-NITH系统，每个终端配备多个天线。在UAV-NITH系统中采用空间调制（SM）。导出了发射天线选择方案和非发射天线选择方案的中断概率（OP）和系统吞吐量的封闭表达式。通过蒙特卡罗仿真验证了分析结果。研究结果表明，FD传输在中低发射功率区域明显优于半双工（HD），而TAS提供了可观的增益，特别是在低损伤条件下。然而，RSI和NITH都引入了误差下限，限制了高发射功率下的性能。此外，无人机机动性具有关键影响，因为更高的速度会大大降低可靠性，而在毫米波频率下操作会增加OP，但可以通过使用更多天线来缓解。总体而言，研究结果突出了具有TAS的FD中继在无人机辅助网络中的优势，同时强调了干扰抑制、硬件感知设计和无人机速度控制在未来实现中的重要性。

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引用次数: 0

A 16T SRAM cell with integrated radiation hardening and half-select disturbance immunity 一种集成辐射硬化和半选择抗干扰的16T SRAM单元

IF 3.2 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications

Pub Date : 2025-11-11 DOI: 10.1016/j.aeue.2025.156133

Snigdha Jain, Neeta Pandey

The existing SRAM cells support radiation hardening and immunity to half-select disturbance in isolation. This work is an effort for designing an SRAM cell (RHI-16T) that integrates radiation hardening and half-select disturbance immunity. The performance of the proposed cell is compared with HP16T, SEA14T, RHPD14T, RHHS16T, SRRD12T, TRD9T and PPNN12T. In comparison to considered cells, the maximum improvement in performance parameter is as follows: the proposed cell exhibits 4.48

\times

/6.91

\times

/11.7E＋5

\times

/1.30

\times

higher hold static noise margin/read static noise margin/figure of merit/critical charge and shows4.80

\times

/7.69

\times

/1,04,400

\times

/1.34

\times

reduced read access time/write access time/leakage power consumption/write trip voltage at 1.2 V supply voltage in Cadence Virtuoso.

现有的SRAM细胞在隔离状态下支持辐射硬化和半选择干扰免疫。本工作旨在设计一种集辐射硬化和半选择抗干扰于一体的SRAM单元（RHI-16T）。并与HP16T、SEA14T、RHPD14T、RHHS16T、SRRD12T、TRD9T和PPNN12T进行了性能比较。与所考虑的电池相比，性能参数的最大改进如下：所提出的电池具有4.48×/6.91×/11.7 × +5×/1.30×高的保持静态噪声裕度/读静态噪声裕度/优值/临界电荷，并且在Cadence Virtuoso中具有4.80×/7.69×/1,04,400×/1.34×减少的读访问时间/写访问时间/泄漏功耗/ 1.2 V供电电压下的写脱扣电压。

引用次数: 0

A low-kHz LCC-S inductive power transfer system for sensor powering through non-perforated aluminum barriers 一种低khz lc - s感应功率传输系统，用于传感器通过无孔铝屏障供电

IF 3.2 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications

Pub Date : 2025-11-08 DOI: 10.1016/j.aeue.2025.156108

Muhammad Waqas , Ruikun Mai , Jing Li , Zeheng Zhang , Fezan Rafique , Wei Zhou

Powering sensors through non-perforated conductive barriers using Wireless Power Transfer (WPT), specifically Inductive Power Transfer (IPT), is challenging due to eddy current losses and structural constraints in industrial settings like gas pipelines. This study presents a novel 3 kHz IPT system using an LCC-series (LCC-S) compensation topology and compact multilayer helical (MLH) coils with iron powder cores to deliver robust wireless power through a 2 mm aluminum barrier with an 18 mm air gap. Finite element analysis (FEA) validates the design, showing enhanced coupling via distributed-gap cores. The LCC-S prototype achieves 0.79 W at 3.11% efficiency across a 20 mm TX-RX separation, sustaining 0.13 W at 30 mm lateral misalignment. Exceeding a benchmark series–series (SS) topology, it ensures miniaturization and barrier integrity, unlike systems requiring bulky coils or perforations. This study pioneers LCC-S at 3 kHz with misalignment analysis, enabling robust power for industrial Internet of Things (IoT) applications.

由于涡流损耗和天然气管道等工业环境的结构限制，使用无线电力传输（WPT），特别是感应电力传输（IPT），通过无穿孔导电屏障为传感器供电具有挑战性。本研究提出了一种新颖的3khz IPT系统，该系统使用lc -系列（lc -s）补偿拓扑和紧凑的多层螺旋（MLH）线圈与铁粉芯，通过2毫米铝屏障和18毫米气隙提供强大的无线电力。有限元分析（FEA）验证了设计，显示了通过分布间隙核心增强的耦合。LCC-S原型在20 mm TX-RX分离时的功率为0.79 W，效率为3.11%，在30 mm横向不对准时功率为0.13 W。它超越了基准系列系列（SS）拓扑结构，确保了小型化和屏障完整性，而不像系统需要庞大的线圈或射孔。这项研究开创了具有失调分析功能的3 kHz lc - s，为工业物联网（IoT）应用提供了强大的功率。

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引用次数: 0

Efficient channel shortening filters for in-package chip-to-chip wireless communication 用于封装芯片对芯片无线通信的高效信道缩短滤波器

IF 3.2 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications

Pub Date : 2025-11-06 DOI: 10.1016/j.aeue.2025.156119

Manh Le-Tran , Dinh Trieu Duong , Van-Khoe Ta

Chip-scale wireless links inside packaged systems suffer from strong multipath and mutual coupling, making interference-limited simultaneous transmissions even at moderate power. This paper introduces an interference-aware channel-shortening receive architecture for in-package wireless links that improves performance under simultaneous transmissions. The proposed receiver operates pre-matched-filter and learns an interference-aware shortener from joint covariance, thereby avoiding double shaping while requiring no transmitter coordination or spatial nulling. Focusing on multi-chiplet network-in-package (NiP) fabrics with simultaneous links and quasi-static channels extracted from full-wave models, we propose to improve post-detection signal-to-interference-plus-noise ratio (SINR) and bit-error rate (BER). Metrics are quantified via closed-form equalizer solutions in various noise-limited and interference-limited regimes. Moreover, our formulation reduces to the conventional minimum mean-square error (MMSE) result in the single-link setup while it maintains significant gains under simultaneous transmissions scenarios. Numerical results show that proposed schemes consistently outperform conventional schemes across different values of power, rate, and the number of co-channel links, delivering significant SINR improvements and noticeable BER reductions at various transmit power ranges while maintaining consistent gains when increasing number of simultaneous links.

封装系统内的芯片级无线链路受到强多径和互耦合的影响，即使在中等功率下也能进行干扰有限的同时传输。本文介绍了一种可感知干扰的压缩信道接收结构，该结构可提高包内无线链路在同步传输条件下的性能。该接收机采用预匹配滤波器，并从联合协方差中学习干扰感知缩短器，从而避免了双重整形，同时不需要发射机协调或空间零化。针对从全波模型中提取的具有同步链路和准静态信道的多晶片封装网络（NiP）结构，提出了提高检测后信噪比（SINR）和误码率（BER）的方法。在各种限制噪声和限制干扰的情况下，通过封闭形式的均衡器解决方案量化度量。此外，我们的公式在单链路设置中降低了传统的最小均方误差（MMSE），同时在同步传输场景下保持了显著的增益。数值结果表明，所提出的方案在不同的功率值、速率和同信道链路数量上始终优于传统方案，在不同的发射功率范围内提供显著的信噪比改善和显著的误码率降低，同时在增加同时链路数量时保持一致的增益。

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引用次数: 0

A coplanar amplifier antenna with seamless integration of filter as input matching network 一种无缝集成滤波器作为输入匹配网络的共面放大天线

IF 3.2 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications

Pub Date : 2025-11-06 DOI: 10.1016/j.aeue.2025.156121

Minghuan Wang

A coplanar active antenna capable of filtering and gain amplification is proposed. The coplanar waveguide-coplanar strip line (CPW-CPS) method facilitates integration between networks. To reduce the size of the integrated antenna, seamless integration technology is used to integrate the Vivaldi antenna as the output matching network of the amplifier and the bandpass filter as the input matching network of the amplifier. The impedance is analyzed using the coupling structure of the CPW filter. Research has found that increasing the coupling width between resonators and decreasing the width of microstrip lines correspond to decreases and increases in capacitance and inductance, respectively. This change broadens the operating frequency of the filtering amplifier antenna. Fabrication and measurements revealed that the designed structure operates at 5.1–6.9 GHz, with a gain variation range of 10–10.44 dBi. Compared to passive antennas, the designed filtering amplifier antenna can provide in-band flat gain while ensuring radiation performance.

提出了一种具有滤波和增益放大功能的共面有源天线。共面波导-共面带状线（CPW-CPS）方法促进了网络间的集成。为了减小集成天线的尺寸，采用无缝集成技术，将Vivaldi天线作为放大器的输出匹配网络，带通滤波器作为放大器的输入匹配网络进行集成。利用CPW滤波器的耦合结构对阻抗进行了分析。研究发现，增加谐振腔之间的耦合宽度和减小微带线的宽度分别对应着电容和电感的减小和增大。这一变化拓宽了滤波放大器天线的工作频率。制作和测量结果表明，设计的结构工作在5.1 ~ 6.9 GHz，增益变化范围为10 ~ 10.44 dBi。与无源天线相比，所设计的滤波放大天线可以在保证辐射性能的同时提供带内平坦增益。

引用次数: 0

Joint parameter estimation for near-field signals with the COLD array 冷阵列近场信号联合参数估计

IF 3.2 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications

Pub Date : 2025-11-06 DOI: 10.1016/j.aeue.2025.156104

Tao Yu, Tieming Wu, Lutao Liu

In modern array signal processing, the parameter estimation of the signals is an important research topic. This paper proposes a method for jointly estimating the direction of arrival (DOA), range, and polarization parameters of the near-field signals with the concentered orthogonal loop and dipole (COLD) array. First of all, the second-order cumulant of the signals received from the COLD array is used to eliminate the range parameter with smaller complexity. Then, the atomic norm minimization (ANM) algorithm is used to estimate the DOA parameter with higher accuracy. Next, the range parameter is obtained by the simple one-dimensional multiple signal classification like (MUSIC-like) peak search. Finally, the polarization parameter is estimated by the principle of subspace decomposition. The comprehensive simulations are performed in the paper and the results show that the proposed method has high estimation accuracy and spatial resolution.

在现代阵列信号处理中，信号的参数估计是一个重要的研究课题。提出了一种利用正交环阵和偶极子阵（COLD）联合估计近场信号到达方向（DOA）、距离和偏振参数的方法。首先，利用COLD阵列接收信号的二阶累积量消除复杂度较小的距离参数；然后，采用原子范数最小化（ANM）算法对DOA参数进行精度较高的估计。其次，通过简单的一维多信号分类，如（MUSIC-like）峰值搜索，得到距离参数。最后，利用子空间分解原理估计极化参数。综合仿真结果表明，该方法具有较高的估计精度和空间分辨率。

引用次数: 0

Retraction notice to “High gain and frequency reconfigurable copper and liquid metamaterial tooth based microstrip patch antenna.” [Int. J. Electron. Commun. 137 (2021) 153799] 对“高增益和频率可重构铜和液体超材料齿基微带贴片天线”的撤回通知。[Int。j .电子。common . 137 (2021) 153799]

IF 3.2 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications

Pub Date : 2025-11-05 DOI: 10.1016/j.aeue.2025.156114

Sunil P. Lavadiya , Shobhit K. Patel , Rayisyan Maria

引用次数: 0

A compact dual-band power amplifier using spoof surface plasmon polaritons for broadband RF applications 一个紧凑的双频功率放大器，利用欺骗表面等离子激元极化用于宽带射频应用

IF 3.2 3区计算机科学 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Aeu-International Journal of Electronics and Communications

Pub Date : 2025-11-05 DOI: 10.1016/j.aeue.2025.156116

Hemant Kumari , Amartya Paul , Shubhankar Majumdar , Giovanni Crupi , Jialin Cai

Spoof surface plasmon polaritons (SSPPs) effectively manipulate electromagnetic waves in the microwave frequency range through ultrathin corrugated metallic structures. This work primarily focused on SSPPs for designing active circuits. Utilizing SSPP-based output matching networks (OMN) for a dual-band power amplifier design (DBPA), offering enhanced impedance matching and bandwidth expansion. Unlike conventional microstrip, the proposed SSPP OMN employs an excavated groove-inclusion design that enhances field confinement, reduces transverse size, and enables miniaturized wideband operation. The proposed DBPA-SSPP, fabricated using CREE CG2H40010F GaN HEMT technology on Rogers RT/duroid 5880 substrates, exhibits strong agreement between experimental results and simulations, validating the effectiveness of the design methodology. The final implementation achieves frequencies of 1.69–1.89 GHz and 2.37–2.42 GHz, saturated output powers of 42.5 dBm and 40 dBm, gains of 14.5 dB and 14 dB, and drain efficiencies of 77.3% and 68.5%, respectively. Furthermore, adjacent channel power (ACP) is measured at −68.6 dBc and −64.3 dBc, with fractional bandwidths of 11.23%, and 2.08%, respectively. These results highlight the feasibility of SSPP-enabled amplifiers for sub-6 GHz 5G systems and suggest potential applications in microwave plasma communication and power delivery systems.

欺骗表面等离子激元（SSPPs）通过超薄波纹金属结构有效地操纵微波频率范围内的电磁波。这项工作主要集中在设计有源电路的sspp上。利用基于sspp的输出匹配网络（OMN）进行双频功率放大器设计（DBPA），提供增强的阻抗匹配和带宽扩展。与传统的微带不同，SSPP OMN采用了一种挖掘的凹槽包体设计，增强了磁场约束，减小了横向尺寸，实现了小型化的宽带运行。采用CREE CG2H40010F GaN HEMT技术在Rogers RT/duroid 5880衬底上制备DBPA-SSPP，实验结果与仿真结果非常吻合，验证了设计方法的有效性。最终实现频率分别为1.69 ~ 1.89 GHz和2.37 ~ 2.42 GHz，饱和输出功率分别为42.5 dBm和40 dBm，增益分别为14.5 dB和14 dB，漏极效率分别为77.3%和68.5%。相邻通道功率（ACP）分别为- 68.6 dBc和- 64.3 dBc，分数带宽分别为11.23%和2.08%。这些结果强调了在sub-6 GHz 5G系统中启用sspp放大器的可行性，并提出了在微波等离子体通信和电力传输系统中的潜在应用。

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