Search · four archives
Search · four archives
17 papers · ranked by Valyu relevance
Jonathan Aguiar Soares, Kayol Soares Mayer, Fernando César Comparsi de Castro, Dalton Soares Arantes + 1 more
Multi-input multi-output (MIMO) transmission schemes have become the techniques of choice for increasing spectral efficiency in bandwidth-congested areas. However, the design of cost-effective receivers for MIMO channels remains a challenging task. The maximum likelihood detector can achieve excellent…
Júlia V. Gallinaro, Benjamin Scholl, Claudia Clopath, Lyle J. Graham
The activity of neurons in the visual cortex is often characterized by tuning curves, which are thought to be shaped by Hebbian plasticity during development and sensory experience. This leads to the prediction that neural circuits should be organized such that neurons with similar functional preference are connected…
Neereja Sundaresan, Theodore J. Yoder, Youngseok Kim, Muyuan Li + 6 more
Quantum error correction offers a promising path for performing high fidelity quantum computations. Although fully fault-tolerant executions of algorithms remain unrealized, recent improvements in control electronics and quantum hardware enable increasingly advanced demonstrations of the necessary operations for error…
Ji Zhang, Anmin Chen, Ying Zhang, Baofeng Ji + 3 more
'Hengzhou Xu' 'Jun Chen'] The Alternating Direction Method of Multipliers (ADMM) has proven to be an efficient approach for implementing linear programming (LP) decoding of low-density parity-check (LDPC) codes. By introducing penalty terms into the LP decoding model’s objective function, ADMM-based variable node…
Peng Wang, Eryi Hu
Multi-User MIMO (MU-MIMO) detection plays a pivotal role in modern wireless receivers, yet practical downlink deployments are severely bottlenecked when co-scheduled users employ unknown and highly heterogeneous modulation formats. This paper introduces a joint architecture that seamlessly integrates blind modulation…
Tae-Kyoung Kim, Xianpeng Wang, Fangqing Wen, Liangtian Wan + 1 more
This study considers an improved likelihood probability in multi-input multi-output (MIMO) systems using one-bit analog-to-digital converters (ADCs). MIMO systems using one-bit ADCs are known to exhibit from performance degradation because of inaccurate likelihood probabilities. To overcome this degradation, the…
Frank Kwasniok, Bryan C Daniels
A comprehensive methodology for semiparametric probability density estimation is introduced and explored. The probability density is modelled by sequences of mostly regular or steep exponential families generated by flexible sets of basis functions, possibly including boundary terms. Parameters are estimated by global…
Tae-Kyoung Kim, Davy P. Gaillot
This study considers a detection scheme for cooperative multi-input-multi-output (MIMO) systems using one-bit analog-to-digital converters (ADCs) in a decode-and-forward (DF) relay protocol. The use of one-bit ADCs is a promising technique for reducing the power consumption, which is necessary for supporting future…
Enes Makalic, Daniel Francis Schmidt, Raúl Alcaraz, Luca Faes + 2 more
'Leandro Pardo' 'Boris Ryabko'] Data with censoring is common in many areas of science and the associated statistical models are generally estimated with the method of maximum likelihood combined with a model selection criterion such as Akaike’s information criterion. This manuscript demonstrates how the information…
Lingjun Kong, Haiyang Liu, Yuezhuang Shi, Jiacheng Miao + 1 more
In modern communication systems, the concatenation of a low-density parity-check (LDPC) code with a cyclic redundancy check (CRC) code is commonly used for error correction. In this paper, we propose a low-complexity two-stage scheme for decoding these codes using their concatenation structures. In the first stage, the…
Mohamed Marey, Ahmed Sedik, Hala Mostafa, Hsiao-Chun Wu
A radio is adaptive if it can autonomously analyze the communications environment and instantly modify its settings to achieve the best possible efficiency. In orthogonal frequency division multiplexing (OFDM) transmissions, identifying the space frequency block coding (SFBC) category utilized is one of the most…
Mikhail Bakulin, Vitaly Kreyndelin, Sergei Melnik, Vladimir Sudovtsev + 2 more
'Vladimir Sudovtsev' 'Dmitry Petrov' 'Oleg Varlamov'] One of the development directions of new-generation mobile communications is using multiple-input multiple-output (MIMO) channels with a large number of antennas. This requires the development and utilization of new approaches to signal detection in MIMO channels…
Yuxuan Sun, Liangbin Zhao, Jianguo Li, Ziyi Zhang + 3 more
'Xiangyuan Bu' 'Xiaomin Ma'] The traditional LDPC encoding and decoding system is characterized by low throughput and high resource consumption, making it unsuitable for use in cost-efficient, energy-saving sensor networks. Aiming to optimize coding complexity and throughput, this paper proposes a combined design of a…
Mengsheng Guan, Min Zhu, Baoming Bai, T. Aaron Gulliver
To improve the decoding performance of asynchronous sparse code multiple access (SCMA) systems over additive white Gaussian noise (AWGN) channels, this paper proposes a novel windowed joint detection and decoding algorithm for a rate-compatible (RC), LDPC code-based, incremental redundancy (IR) hybrid automatic repeat…
Haitao Liu, Xuchao Cheng, Wenqing Li, Fan Feng + 3 more
'Ying Xiao' 'Shiqi Fu'] The lattice reduction-aided algorithm has received broad attention from researchers since it operates as a maximum likelihood receiver with better system performance for multiple-input multiple-output orthogonal frequency division multiplexing systems and contains a full diversity. A novel…
Tobias Monsees, Oliver Griebel, Matthias Herrmann, Dirk Wübben + 3 more
'Armin Dekorsy' 'Norbert Wehn' 'Syed A. Jafar'] In Message Passing (MP) decoding of Low-Density Parity Check (LDPC) codes, extrinsic information is exchanged between Check Nodes (CNs) and Variable Nodes (VNs). In a practical implementation, this information exchange is limited by quantization using only a small number…
Alireza Tasdighi, Mansoor Yousefi, Jun Chen
Weighted belief propagation (WBP) for the decoding of linear block codes is considered. In WBP, the Tanner graph of the code is unrolled with respect to the iterations of the belief propagation decoder. Then, weights are assigned to the edges of the resulting recurrent network and optimized offline using a training…