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We propose a method for MIMO decoding when channel state information (CSI) is unknown to both the transmitter and receiver. The proposed method requires some structure in the transmitted signal for the decoding to be effective, in…

信号处理 · 电气工程与系统科学 2018-02-06 Thomas R. Dean , Mary Wootters , Andrea J. Goldsmith

This paper addresses carrier frequency offset (CFO) estimation and training sequence design for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems over frequency selective fading channels. By…

信息论 · 计算机科学 2017-03-23 Yanxiang Jiang , Hlaing Minn , Xiqi Gao , Xiaohu You

Synchronization is a fundamental procedure in cellular systems whereby an UE acquires the time and frequency information required to decode the data transmitted by a BS. Due to the necessity of using large antenna arrays to obtain the…

信号处理 · 电气工程与系统科学 2020-05-05 Javier Rodriguez-Fernandez

This paper proposes and analyzes a distributed MAC protocol that achieves zero collision with no control message exchange nor synchronization. ZC (ZeroCollision) is neither reservation-based nor dynamic TDMA; the protocol supports…

网络与互联网体系结构 · 计算机科学 2009-04-16 Jiwoong Lee , Jean C. Walrand

Channel polarization is a method of constructing capacity achieving codes for symmetric binary-input discrete memoryless channels (B-DMCs) [1]. In the original paper, the construction complexity is exponential in the blocklength. In this…

信息论 · 计算机科学 2009-05-23 Ryuhei Mori , Toshiyuki Tanaka

This paper presents a novel training matrix design for spatial modulation (SM) systems, by introducing a new class of two-dimensional (2D) arrays called sparse zero correlation zone (SZCZ) arrays. An SZCZ array is characterized by a…

信息论 · 计算机科学 2024-11-22 Cheng-Yu Pai , Zilong Liu , Chao-Yu Chen

Binary mixtures of Bose-Einstein condensates trapped in deep optical lattices and subjected to equal contributions of Rashba and Dresselhaus spin-orbit coupling (SOC), are investigated in the presence of a periodic time modulation of the…

量子气体 · 物理学 2016-10-12 M. Salerno , F. Kh. Abdullaev , A. Gammal , Lauro Tomio

In recent years, traditional zero-correlation zone (ZCZ) sequences are being studied due to support interference-free quasi-synchronous code division multiple access (QS-CDMA) systems. However, in cognitive radio (CR) network, it is…

信息论 · 计算机科学 2023-09-06 Nishant Kumar , Palash Sarkar , Sudhan Majhi

This paper addresses a simplified frequency offset estimator for multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems over frequency selective fading channels. By exploiting the good correlation…

信息论 · 计算机科学 2017-03-22 Yanxiang Jiang , Hlaing Minn , Xiaohu You , Xiqi Gao

In this paper we consider a constant envelope pilot signal based carrier frequency offset (CFO) estimation in massive multiple-input multiple-output (MIMO) systems. The proposed algorithm performs spatial averaging on the periodogram of the…

信息论 · 计算机科学 2016-05-06 Sudarshan Mukherjee , Saif Khan Mohammed

Compressed beamforming algorithm is used in the current Wi-Fi standard to reduce the beamforming feedback overhead (BFO). However, with each new amendment of the standard the number of supported antennas in Wi-Fi devices increases, leading…

信号处理 · 电气工程与系统科学 2023-12-08 Mrugen Deshmukh , Zinan Lin , Hanqing Lou , Mahmoud Kamel , Rui Yang , Ismail Guvenc

Continuous phase modulation (CPM) with 1-bit quantization at the receiver is promising in terms of energy and spectral efficiency. In this study, CPM waveforms with symbol durations significantly shorter than the inverse of the signal…

信息论 · 计算机科学 2019-10-16 Rodrigo R. M. de Alencar , Lukas T. N. Landau

Optimal binary labelings, input distributions, and input alphabets are analyzed for the so-called bit-interleaved coded modulation (BICM) capacity, paying special attention to the low signal-to-noise ratio (SNR) regime. For 8-ary pulse…

信息论 · 计算机科学 2011-10-21 Erik Agrell , Alex Alvarado

Optimal binary labelings, input distributions, and input alphabets are analyzed for the so-called bit-interleaved coded modulation (BICM) capacity, paying special attention to the low signal-to-noise ratio (SNR) regime. For 8-ary pulse…

信息论 · 计算机科学 2011-10-21 Erik Agrell , Alex Alvarado

In this paper, we propose a practical adaptive coding modulation scheme to approach the capacity of free-space optical (FSO) channels with intensity modulation/direct detection based on probabilistic shaping. The encoder efficiently adapts…

信息论 · 计算机科学 2020-12-01 Ahmed Elzanaty , Mohamed-Slim Alouini

We consider an optomechanical cavity with a movable end-mirror as a quantum mechanical oscillator (MO) containing an interacting cigar-shaped Bose-Eisenstein condensate (BEC). It is assumed that both the MO and the BEC interact with the…

量子物理 · 物理学 2019-05-01 Ali Motazedifard , A. Dalafi , M. H. Naderi , R. Roknizadeh

Continuous phase modulation (CPM) plays an important role in wireless communications due to its constant envelope signal property and tight spectrum confinement capability. Although CPM has been studied for many years, CPM training…

信息论 · 计算机科学 2019-11-11 Zilong Liu , Yong Liang Guan , Chee-Cheon Chui

In dynamically varying optical wireless communication (OWC) links, conventional quadrature amplitude modulation (QAM) in optical orthogonal frequency-division multiplexing (OFDM) requires frequent channel estimation and equalization,…

光学 · 物理学 2026-03-19 Tian Cao , Ping Wang , Tianfeng Wu , Kaile Wang , Jian Song

In this paper, a framework of beamspace channel estimation in millimeter wave (mmWave) massive MIMO system is proposed. The framework includes the design of hybrid precoding and combining matrix as well as the search method for the largest…

信号处理 · 电气工程与系统科学 2019-01-08 Wenyan Ma , Chenhao Qi

In this paper, we propose an iterative receiver based on gridless variational Bayesian line spectra estimation (VALSE) named JCCD-VALSE that \emph{j}ointly estimates the \emph{c}arrier frequency offset (CFO), the \emph{c}hannel with high…

信息论 · 计算机科学 2021-07-16 Lei Wan , Jiang Zhu , En Cheng , Zhiwei Xu