Impact of Angular Spread and DOA Estimation on the Performance of Wideband CDMA Array-Receivers

Diop, Mame Andallah; Cheikhrouhou, Karim; Affes, Sofiène

doi:10.1109/vtcf.2006.51

IEEE Vehicular Technology Conference 2006

DOI: 10.1109/vtcf.2006.51

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Impact of Angular Spread and DOA Estimation on the Performance of Wideband CDMA Array-Receivers

Mame Andallah Diop

Karim Cheikhrouhou

Sofiène Affes

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2022

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“…This is especially important to assess techniques that are sensitive to PAS (see, e.g. [25], [26] for AoA/AoD estimation or [27] for multi-user power allocation in massive MIMO context) or that use PAS as a priori knowledge (see, e.g. [28] for beam training improvement or [29], [30] for AoA/AoD estimation).…”

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confidence: 99%

Angular Clustering of Millimeter-Wave Propagation Channels With Watershed Transformation

Lyu¹,

Benlarbi-Delaï²,

Ren³

et al. 2022

IEEE Trans. Antennas Propagat.

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An angular clustering method based on image processing is proposed in this paper. It is used to identify clusters in 2D representations of propagation channels. The approach uses operations such as watershed segmentation and is particularly well suited for clustering directional channels obtained by beam-steering at millimeter-wave. This situation occurs for instance with electronic beam-steering using analog antenna arrays during beam training process or during channel modeling measurements using either electronic or mechanical beam-steering. In particular, the proposed technique is used here to cluster two-dimensional power angular spectrum maps. The proposed clustering is unsupervised and is well suited to preserve the shape of clusters by considering the angular connection between neighbor samples, which is useful to obtain more accurate descriptions of channel angular properties. The approach is found to outperform approaches based on K-Power-Means in terms of accuracy as well as computational resources. The technique is assessed in simulation using IEEE 802.11ad channel model and in measurement using experiments conducted at 60 GHz in an indoor environment.Index Terms-propagation channel angular clustering, millimeter wave, watershed transformation, 2D angular measurements at 60 GHz I. INTRODUCTIONR ECENT years have witnessed a growing interest in millimeter waves communications [1]. The spectrum congestion in the lower part of the spectrum and the evergrowing need of higher data rates incited the telecommunication actors to assess the suitability of mm-wave frequency bands to support Gbps wireless communications. During the last decade, several standards have been proposed to operate Manuscript

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confidence: 99%

Angular Clustering of Millimeter-Wave Propagation Channels With Watershed Transformation

Lyu¹,

Benlarbi-Delaï²,

Ren³

et al. 2022

IEEE Trans. Antennas Propagat.

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Impact of Angular Spread and DOA Estimation on the Performance of Wideband CDMA Array-Receivers

Cited by 1 publication

References 9 publications

Angular Clustering of Millimeter-Wave Propagation Channels With Watershed Transformation

Angular Clustering of Millimeter-Wave Propagation Channels With Watershed Transformation

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