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This paper considers a sequential estimation and sensor scheduling problem with one sensor and one estimator. The sensor makes sequential observations about the state of an underlying memoryless stochastic process, and makes a decision as…

系统与控制 · 计算机科学 2016-11-17 Xiaobin Gao , Emrah Akyol , Tamer Basar

The common approach of designing a communication device is to maximize a well-defined objective function, e.g., the channel capacity and the cut-off rate. We propose easy-to-implement solutions for Gaussian channels that approximate the…

信息论 · 计算机科学 2016-03-24 Qian Yu

In this paper, we study an asymptotic approximation of the Fisher information for the estimation of a scalar parameter using quantized measurements. We show that, as the number of quantization intervals tends to infinity, the loss of Fisher…

信息论 · 计算机科学 2013-10-28 Rodrigo Cabral Farias , Jean-Marc Brossier

Recovery of the sparsity pattern (or support) of an unknown sparse vector from a limited number of noisy linear measurements is an important problem in compressed sensing. In the high-dimensional setting, it is known that recovery with a…

信息论 · 计算机科学 2012-06-26 Galen Reeves , Michael Gastpar

We present techniques that improve the performance of asymmetric stabilizer codes in the presence of unital channels with unknown parameters. Our method estimates the channel parameters using information recovered from syndrome measurements…

量子物理 · 物理学 2017-05-30 Jan Florjanczyk , Todd A. Brun

This paper is devoted to the study of the performance of the Linear Minimum Mean-Square Error receiver for (receive) correlated Multiple-Input Multiple-Output systems. By the random matrix theory, it is well-known that the Signal-to-Noise…

信息论 · 计算机科学 2008-10-17 Abla Kammoun , Malika Kharouf , Walid Hachem , Jamal Najim

For decoherence processes induced by weak interactions with the environment, a general quantum channel with one noise parameter has been formulated. This channel is called low-noise channel and very useful for investigating the parameter…

量子物理 · 物理学 2009-11-13 Masahiro Hotta , Tokishiro Karasawa

Neural-based image and video codecs are significantly more power-efficient when weights and activations are quantized to low-precision integers. While there are general-purpose techniques for reducing quantization effects, large losses can…

图像与视频处理 · 电气工程与系统科学 2023-01-26 Amir Said , Reza Pourreza , Hoang Le

Compressed sensing is by now well-established as an effective tool for extracting sparsely distributed information, where sparsity is a discrete concept, referring to the number of dominant nonzero signal components in some basis for the…

信息论 · 计算机科学 2015-06-15 Dinesh Ramasamy , Sriram Venkateswaran , Upamanyu Madhow

Baseband processing algorithms often require knowledge of the noise power, signal power, or signal-to-noise ratio (SNR). In practice, these parameters are typically unknown and must be estimated. Furthermore, the mean-square error (MSE) is…

信号处理 · 电气工程与系统科学 2023-03-28 Alexandra Gallyas-Sanhueza , Christoph Studer

Employing low-resolution analog-to-digital converters (ADCs) for millimeter wave receivers with large antenna arrays provides opportunity to efficiently reduce power consumption of the receiver. Reducing ADC resolution, however, results in…

信息论 · 计算机科学 2020-05-12 Jinseok Choi , Gilwon Lee , Ahmed Alkhateeb , Alan Gatherer , Naofal Al-Dhahir , Brian L. Evans

This paper considers a wireless communication system with low-resolution quantizers, in which transmitted signals are corrupted by fading and additive noise. For such wireless systems, a universal lower bound on the average symbol error…

信号处理 · 电气工程与系统科学 2019-03-01 Samiru Gayan , Rajitha Senanayake , Hazer Inaltekin , Jamie Evans

We investigate the limits of communication over the discrete-time Additive White Gaussian Noise (AWGN) channel, when the channel output is quantized using a small number of bits. We first provide a proof of our recent conjecture on the…

信息论 · 计算机科学 2008-05-15 Jaspreet Singh , Onkar Dabeer , Upamanyu Madhow

Predicting performance-related behavior of the underlying network structure becomes more and more indispensable in terms of the aspired application outcome quality. However, the reliable forecast of QoS metrics like packet transfer delay in…

性能 · 计算机科学 2013-08-20 Adam Bachorek , Bagavathiannan Palanisamy , Jens B. Schmitt

This paper concerns the problem of 1-bit compressed sensing, where the goal is to estimate a sparse signal from a few of its binary measurements. We study a non-convex sparsity-constrained program and present a novel and concise analysis…

机器学习 · 计算机科学 2020-07-10 Jie Shen

Massive MIMO (Multiple-Input Multiple-Output) is a key enabler for 5G and future wireless systems, boosting channel capacity, energy efficiency, and spectral efficiency. However, high power consumption and hardware costs of…

最优化与控制 · 数学 2025-12-08 Jie Zhang , Huifu Xu

In interference channels, channel state information (CSI) can be exploited to reduce the interference signal dimensions and thus achieve the optimal capacity scaling, i.e. degrees of freedom, promised by the interference alignment…

信息论 · 计算机科学 2017-01-03 Zhinan Xu , Markus Hofer , Thomas Zemen

This paper studies the problem of deciding on the absence (i.e., null hypothesis, $\mathcal{H}_0$) or presence (i.e., alternative hypothesis, $\mathcal{H}_1$) of an unknown signal embedded in the received signal in a multiple-input,…

信息论 · 计算机科学 2021-09-07 M. A. Teeti

Due to the heavy reliance of millimeter-wave (mmWave) wireless systems on directional links, beamforming (BF) with high-dimensional arrays is essential for cellular systems in these frequencies. How to perform the array processing in a…

The signal to noise ratio (SNR) is one of the important measures for reducing the noise.A technique that uses a linear prediction error filter (LPEF) and an adaptive digital filter (ADF) to achieve noise reduction in a speech and image…

网络与互联网体系结构 · 计算机科学 2011-10-12 R. Seshadri , N. Penchalaiah