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Iterative message passing detection based on expectation propagation(EP) has demonstrated near-optimum performance in many signal processing and communication scenarios. The method remains feasible even for channel impulse responses (CIRs),…

信息论 · 计算机科学 2025-09-23 Jannis Clausius , Luca Schmid , Laurent Schmalen , Stephan ten Brink

A method for channel estimation in wideband massive Multiple-Input Multiple-Output (MIMO) systems using covariance identification is developed. The method is useful for Frequency-Division Duplex (FDD) at either sub-6GHz or millimeter wave…

信号处理 · 电气工程与系统科学 2024-10-30 José González-Coma , Pedro Suárez-Casal , Paula M. Castro , Luis Castedo , Michael Joham

In this paper, we investigate the application of continuous sparse signal reconstruction algorithms for the estimation of the ranges and speeds of multiple moving targets using an FMCW radar. Conventionally, to be reconstructed, continuous…

信号处理 · 电气工程与系统科学 2021-02-11 Gilles Monnoyer de Galland , Thomas Feuillen , Luc Vandendorpe , Laurent Jacques

In this paper, we develop a low-complexity channel estimation for hybrid millimeter wave (mmWave) systems, where the number of radio frequency (RF) chains is much less than the number of antennas equipped at each transceiver. The proposed…

信息论 · 计算机科学 2017-03-14 Lou Zhao , Derrick Wing Kwan Ng , Jinhong Yuan

In this paper, we examine the use of a deep multi-layer perceptron model architecture to classify received signal samples as coming from one of four common waveforms, Single Carrier (SC), Single-Carrier Frequency Division Multiple Access…

信号处理 · 电气工程与系统科学 2021-08-18 C. Tanner Fredieu , Justin Bui , Anthony Martone , Robert J. Marks , Charles Baylis , R. Michael Buehrer

Wideband spectrum sensing is a significant challenge in cognitive radios (CRs) due to requiring very high-speed analog- to-digital converters (ADCs), operating at or above the Nyquist rate. Here, we propose a very low-complexity zero-block…

信息论 · 计算机科学 2015-07-06 Zeinab Zeinalkhani , Amir H. Banihashemi

Guessing random additive noise decoding (GRAND) is a noise-centric decoding method, which is suitable for ultra-reliable low-latency communications, as it supports high-rate error correction codes that generate short-length codewords. GRAND…

信息论 · 计算机科学 2022-12-12 Ioannis Chatzigeorgiou , Francisco A. Monteiro

Low complexity joint estimation of synchronization impairments and channel in a single-user MIMO-OFDM system is presented in this letter. Based on a system model that takes into account the effects of synchronization impairments such as…

信息论 · 计算机科学 2013-04-30 Renu Jose , Sooraj K. Ambat , K. V. S. Hari

The focus of this letter is on the reduction of the large pilot overhead in orthogonal frequency division multiplexing (OFDM) based massive multiple-input multiple-output (MIMO) systems. We propose a novel joint channel estimation and…

信息论 · 计算机科学 2022-12-16 Danilo Lelin Li , Arman Farhang

A new single-letter achievable rate region is proposed for the two-user discrete memoryless multiple-access channel(MAC) with noiseless feedback. The proposed region includes the Cover-Leung rate region [1], and it is shown that the…

信息论 · 计算机科学 2014-03-31 Ramji Venkataramanan , S. Sandeep Pradhan

In this paper, we propose low complexity algorithms based on Markov chain Monte Carlo (MCMC) technique for signal detection and channel estimation on the uplink in large scale multiuser multiple input multiple output (MIMO) systems with…

信息论 · 计算机科学 2012-01-31 Tanumay Datta , N. Ashok Kumar , A. Chockalingam , B. Sundar Rajan

For massive MIMO AF relays, symbol detection becomes a practical issue when the number of antennas is not large enough, since linear methods are non-optimal and optimal methods are exponentially complex. This paper proposes a new detection…

信息论 · 计算机科学 2020-03-27 Haochuan Zhang , Qiuyun Zou

Deep learning-based joint source-channel coding (JSCC) is emerging as a potential technology to meet the demand for effective data transmission, particularly for image transmission. Nevertheless, most existing advancements only consider…

信号处理 · 电气工程与系统科学 2024-06-18 Pujing Yang , Guangyi Zhang , Yunlong Cai

Autonomous vehicles are conceived to provide safe and secure services by validating the safety standards as indicated by SOTIF-ISO/PAS-21448 (Safety of the intended functionality). Keeping in this context, the perception of the environment…

计算机视觉与模式识别 · 计算机科学 2021-12-01 Shoaib Azam , Farzeen Munir , Moongu Jeon

We propose a novel deep learning-based channel estimation technique for high-dimensional communication signals that does not require any training. Our method is broadly applicable to channel estimation for multicarrier signals with any…

信号处理 · 电气工程与系统科学 2019-04-23 Eren Balevi , Jeffrey G. Andrews

A blind Direction-of-Arrivals (DOAs) estimate of narrowband signals for Acoustic Vector-Sensor (AVS) arrays is proposed. Building upon the special structure of the signal measured by an AVS, we show that the covariance matrix of all the…

信号处理 · 电气工程与系统科学 2020-12-17 Amir Weiss

Massive MIMO OFDM waveforms help support a large number of users in the same time-frequency resource and also provide significant array gain for uplink reception in cellular systems. However, channel estimation in such large antenna systems…

信息论 · 计算机科学 2024-06-04 P Aswathylakshmi , Radha Krishna Ganti

This letter proposes a model for symbol detection in the uplink of IRS-assisted networks in the presence of channel aging. During the first stage, we model the received pilot signal as a tensor, which serves as a basis for both estimating…

信号处理 · 电气工程与系统科学 2026-05-29 Kenneth B. A. Benicio , André L. F. de Almeida , Bruno Sokal , Fazal-E-Asim , Behrooz Makki , Gábor Fodor

A new method for frequency synchronization based upon Zero-Intermediate Frequency Zero-IF receiver and characteristics of the received signal s power spectrum for MC-DSCDMA Up link system is proposed in this paper. In addition to this,…

网络与互联网体系结构 · 计算机科学 2014-02-18 V. Karthikeyan , V. J. Vijayalakshmi

This paper proposes a channel estimation method for hybrid wideband multiple-input-multiple-output (MIMO) systems in high-frequency bands, including millimeter-wave (mmWave) and sub-terahertz (sub-THz), in the presence of beam squint…

信号处理 · 电气工程与系统科学 2025-06-17 Kabuto Arai , Koji Ishibashi