High-dimensional Channel Estimation for Simultaneous Localization and Communications | IEEE Conference Publication | IEEE Xplore

High-dimensional Channel Estimation for Simultaneous Localization and Communications


Abstract:

Simultaneous localization and communication (SLAC) is a desirable feature of 5G and beyond 5G wireless networks. To be able to implement SLAC, efficient high dimensional ...Show More

Abstract:

Simultaneous localization and communication (SLAC) is a desirable feature of 5G and beyond 5G wireless networks. To be able to implement SLAC, efficient high dimensional channel estimation methods are critical. This work presents a low-complexity multidimensional channel parameter estimation via rotational invariance techniques (MD-ESPRIT). We use both the spatial smoothing and forward-backward averaging techniques to further explore data samples to extract multipath components (MPCs). We propose a one-dimensional Fast-Fourier-Transform- (FFT) and inverse-FFT-based approach to obtain the signal subspaces for angular frequency estimation. The geometry relationship between MPCs and positions is utilized for simultaneous positioning and mapping. Numerical results demonstrate the improved identifiability and low complexity performance of the proposed scheme.
Date of Conference: 29 March 2021 - 01 April 2021
Date Added to IEEE Xplore: 05 May 2021
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Conference Location: Nanjing, China

I. Introduction

The fifth generation (5G) and beyond wireless systems show the potential to simultaneously achieve high-rate communications and high-accuracy positioning performance. For one reason, with the deployment of large antenna arrays at both transmitter and receiver sides, the system spectrum and energy efficiency of the massive multiple-input multiple-output (MIMO) systems can be significantly improved [1], [2]. The large available bandwidth over millimeter wave (mmWave) frequency can boost the communication rate [3]. Moreover, massive MIMO enables the high angular resolution of the propagation multipath. The wide-band mmWave signals allow high delay resolutions. Therefore, significant improvement of the localization performance can be achieved [1], [4].

References

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