Výsledky vyhledávání - "Digital precoder"

On Achieving Optimal Rate of Digital Precoder by RF-Baseband Codesign for MIMO Systems Autor Edin Zhang, Chiachi Huang

“… We propose two hybrid precoder designs that provide the same achievable rate as the optimal fully-digital precoder…”
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Realizing Fully Digital Precoders in Hybrid A/D Architecture With Minimum Number of RF Chains Autor Morsali, Alireza, Haghighat, Afshin, Champagne, Benoit

“…In this letter, the minimum number of required radio frequency (RF) chains for realizing any MIMO fully digital precoder (FDP…”
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STAR-RIS-Assisted Hybrid MIMO mmWave Communications Autor Yang, Xiawei, Liu, Heng, Gong, Shiqi, Wang, Gongpu, Xing, Chengwen

“… T&R coefficients at the STAR-RIS and the hybrid analog-digital precoder/combiners, subject to the discrete phase shift constraints…”
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Throughput Maximization Oriented Joint Resource Allocation for Multi-RIS-Assisted mmWave-NOMA Systems Autor Tang, Kun, Cai, Qihong, Zheng, Beixiong, Xiu, Xin, Feng, Wenjie, Che, Wenquan, Xue, Quan

“…While single reconfigurable intelligent surface (RIS)-aided systems have demonstrated potential in improving transmission performance, their ability to serve…”
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Low-complexity Hybrid Beamforming for MMSE-based Symbol-level Precoding in Multi-user MISO System Autor Lee, Jaewon, Kang, Chung G.

“…Data-aided symbol-level precoding can exploit constructure interference for improving the energy and system efficiency in the multiantenna downlink channel,…”
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A Framework for Multi-Functional Optimization in RIS-Aided Hybrid Analog-Digital MIMO Systems Autor Ju, Xin, Xing, Chengwen, Yang, Hanyu, Gong, Shiqi, Zhao, Nan, Niyato, Dusit

“…Both the reconfigurable intelligent surface (RIS) and the hybrid analog-digital antenna array have been envisioned as two cost-effective and promising…”
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Energy-Efficient Beamforming for Downlink Multi-User Systems With Dynamic Metasurface Antennas Autor Chen, Guangyi, Zhang, Ruoyu, Zhang, Haiyang, Miao, Chen, Ma, Yue, Wu, Wen

“… We aim to maximize the energy efficiency by jointly optimizing the DMA weight matrix and the digital precoder, subject to the constraints of power budget and Lorentzian-phase…”
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Hybrid Analog and Digital Precoding Design for Minimum BER in Massive MIMO System Autor Li, Junjie, Zhao, Lei, Jiang, Yuan

“… First, we formulate an average BER minimization optimization problem, subject to the maximum transmit power constraint and the constant modulus constraints for the phase shifters…”
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Beamforming Design for Dual-functional Radar-communication Systems with Holographic Metasurface Antennas Autor Guangyi CHEN, Ruoyu ZHANG, Hong REN, Yue MA, Chen MIAO, Wen WU

“…The widespread application of wireless communication devices in emerging scenarios (e.g., Vehicle-to-Everything, Low Earth Orbit Satellites) has gradually…”
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A Hybrid Precoding Design Based on Alternate Minimization Autor Yang, Shuo, Dou, Zheng

“…In order to address the high power consumption issue caused by a large number of phase shifters in millimeter-wave Multiple Input Multiple Output (MIMO)…”
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MU-MIMO and Multi-Beam ISAC Hybrid Beamforming Design Autor Leyva, Leonardo, Castanheira, Daniel, Silva, Adao, Gameiro, Atilio

“… The traditional approaches to this problem involve a two-step process: first, a fully digital precoder is obtained, then the HAD beamforming is resolved by minimizing the Euclidean distance to the previously designed fully digital precoder…”
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Low Complexity Implementation of Symbol-level Precoding in Multi-user MISO System Autor Lee, Jaewon, Kang, Chung G.

“… The optimum solution is derived in a closed form for a digital precoder subject to a fixed analog beam, serving as a key implementation block to reduce the computational complexity in the proposed…”
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MmWave MIMO Hybrid Precoding Design Using Phase Shifters and Switches Autor Liu, Qiang, Qi, Chenhao, Yu, Xianghao, Li, Geoffrey Ye

“… Specifically, we alternately optimize the analog precoder and the digital precoder, where the former is converted into several subproblems and each subproblem further…”
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Full-Duplex MIMO Systems with Hardware Limitations and Imperfect Channel Estimation Autor Iimori, Hiroki, de Abreu, Giuseppe Thadeu Freitas, Ishibashi, Koji

“…). A novel minimum mean square error (MMSE)-based joint design of digital precoder and combiner for SI cancellation is offered, which combines the well-known gradient projection method and non-monotonicity considered in recent machine-learning…”
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Max-min hybrid precoder design for mmWave multi-group multicasting systems Autor Gui, Peng, Zhao, Ming-Min, Shi, Qingjiang, Wu, Qihui

“… The problem is nonconvex and hard to solve due mainly to the nonlinear coupling of the digital precoder and the analog precoders…”
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Full-Duplex MIMO Systems with Hardware Limitations and Imperfect Channel Estimation Autor Iimori, Hiroki, Giuseppe Thadeu Freitas de Abreu, Ishibashi, Koji

“…). A novel minimum mean square error (MMSE)-based joint design of digital precoder and combiner for SI cancellation is offered, which combines the well-known gradient projection method and non-monotonicity considered in recent machine-learning…”
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Hybrid Precoding Design for Subarray-Structure-Enabled mmWave URLLC System Autor Liu, Zhiren, Shen, Yuan, Qiang, Mengye, Wang, Gang, Wang, Jun-Bo

“… In our system, an achievable rate maximization problem is established by jointly optimizing the analog and digital precoders at the base station, subject to the constraint of the total power…”
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Joint optimization of hybrid beamforming and reflection coefficients for secure XL-RIS aided SWIPT system Autor Wang, Ze, Xu, Hongbo, Zhang, Guoping, Zhu, Li, Li, Kunyu

“…The extremely large-scale array is a key feature of future wireless communication systems, and the reconfigurable intelligent surface (RIS) gradually develops…”
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Interference Exploitation-Based Hybrid Precoding with Low-Resolution DACs Autor Zheng, Xin, Hegde, Ganapati, Pesavento, Marius

“… We formulate an optimization problem for computing the constructive-interference-based hybrid analog-digital precoders with 1-bit resolution DACs…”
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Learning-Based Multiuser Scheduling in Mimo-Ofdm Systems With Hybrid Beamforming Autor Agheli, Pouya, Kobal, Tugce, Durand, Francois, Andrews, Matthew

“…) metric in hybrid beamforming systems due to its limited multiplexing gain. Our objective is to maximize PF by properly designing the analog and digital precoders…”
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