Book ChapterDOI
Decomposable Atomic Norm Minimization Channel Estimation for Millimeter Wave MIMO-OFDM Systems
An Qianwen,Tao Jing,Yingkun Wen,Zhuojun Duan,Yan Huo +4 more
- pp 3-15
TLDR
This paper addresses the problem of downlink channel estimation in millimeter wave (mmWave) massive multiple input multiple output (MIMO)-orthogonal frequency division multiplexing (OFDM) systems, where wideband frequency selective fading channels are considered.Abstract:
This paper addresses the problem of downlink channel estimation in millimeter wave (mmWave) massive multiple input multiple output (MIMO)-orthogonal frequency division multiplexing (OFDM) systems, where wideband frequency selective fading channels are considered. By exploiting the sparse scattering nature of mmWave channel, we consider channel estimation as three dimensional (3D) (including angles of departure/arrival and the time delay) line spectrum estimation. To achieve super-resolution channel estimation, we propose a decomposable 3D atomic norm minimization estimation method. This method decomposes the 3D estimation problem into two separate dimensions to reduce the computational complexity, where time delays are estimated only in the OFDM system. Simulation results show that the proposed method can achieve comparable mean square errors as the conventional vectorized ANM at much lower computational complexity.read more
Citations
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Proceedings ArticleDOI
Two-Dimensional Scattering Center Extraction Algorithm based on Continuous Dictionary
TL;DR: In this paper , the Alternating Direction Method of Multipliers (ADMM) is used to speed up the SDP problem in the scattering center extraction algorithm based on continuous dictionary.
References
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Journal ArticleDOI
Massive MIMO for next generation wireless systems
TL;DR: While massive MIMO renders many traditional research problems irrelevant, it uncovers entirely new problems that urgently need attention: the challenge of making many low-cost low-precision components that work effectively together, acquisition and synchronization for newly joined terminals, the exploitation of extra degrees of freedom provided by the excess of service antennas, reducing internal power consumption to achieve total energy efficiency reductions, and finding new deployment scenarios.
Journal ArticleDOI
Millimeter-Wave Cellular Wireless Networks: Potentials and Challenges
TL;DR: Measurements and capacity studies are surveyed to assess mmW technology with a focus on small cell deployments in urban environments and it is shown that mmW systems can offer more than an order of magnitude increase in capacity over current state-of-the-art 4G cellular networks at current cell densities.
Journal ArticleDOI
Channel Estimation and Hybrid Precoding for Millimeter Wave Cellular Systems
TL;DR: An adaptive algorithm to estimate the mmWave channel parameters that exploits the poor scattering nature of the channel is developed and a new hybrid analog/digital precoding algorithm is proposed that overcomes the hardware constraints on the analog-only beamforming, and approaches the performance of digital solutions.
Journal ArticleDOI
An Overview of Signal Processing Techniques for Millimeter Wave MIMO Systems
TL;DR: This article provides an overview of signal processing challenges in mmWave wireless systems, with an emphasis on those faced by using MIMO communication at higher carrier frequencies.
Journal ArticleDOI
Millimeter Wave Channel Modeling and Cellular Capacity Evaluation
Mustafa Riza Akdeniz,Yuanpeng Liu,Mathew K. Samimi,Shu Sun,Sundeep Rangan,Theodore S. Rappaport,Elza Erkip +6 more
TL;DR: Detailed spatial statistical models of the channels are derived and it is found that, even in highly non-line-of-sight environments, strong signals can be detected 100-200 m from potential cell sites, potentially with multiple clusters to support spatial multiplexing.