University of Oulu

D. Kumar, J. Kaleva and A. Tolli, "Rate and Reliability Trade-Off for mmWave Communication via Multi-Point Connectivity," 2019 IEEE Global Communications Conference (GLOBECOM), Waikoloa, HI, USA, 2019, pp. 1-6, doi: 10.1109/GLOBECOM38437.2019.9014207

Rate and reliability trade-off for mmWave communication via multi-point connectivity

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Author: Kumar, Dileep1; Kaleva, Jarkko1; Tölli, Antti1
Organizations: 1Centre for Wireless Communications, University of Oulu, Oulu, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.2 MB)
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Language: English
Published: Institute of Electrical and Electronics Engineers, 2019
Publish Date: 2020-06-22


The fundamental challenge of mmWave frequency band is the sensitivity of the radio channel to blockage, which gives rise to unstable connectivity and also impacts the reliability of a system. In this paper, we explore the viability of using Coordinated Multi-point (CoMP) connectivity for robust and resilient downlink communication. We provide a novel iterative algorithm for Weighted Sum-Rate Maximization (WSRM) problem leveraging Successive Convex Approximation (SCA) with low computational complexity, which admits closed-form solution via iterative evaluation of optimal Karush-Kuhn- Tucker (KKT) conditions. Unlike in the conventional CoMP schemes, the propose precoder design has, per-iteration, computational complexity in the order of base-station (BS) antennas instead of system-wide joint transmit antennas. This is achieved by splitting the beamformer design to be parallel across the coordinating BSs. For the downlink precoder design, a conservative estimate of the user specific rate is obtained by considering possible combinations of potentially blocked links. In the presence of random blockages, the effective throughput and outage performance of the proposed method significantly outperform several baseline scenarios, hence providing more reliable connectivity.

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Series: IEEE Global Communications Conference
ISSN: 2334-0983
ISSN-E: 2576-6813
ISSN-L: 2334-0983
ISBN: 978-1-7281-0962-6
ISBN Print: 978-1-7281-0963-3
Pages: 1 - 6
Article number: 9014207
DOI: 10.1109/GLOBECOM38437.2019.9014207
Host publication: 2019 IEEE Global Communications Conference (GLOBECOM), December 9-14, Waikoloa, HI, USA
Conference: IEEE Global Communications Conference
Type of Publication: A4 Article in conference proceedings
Field of Science: 213 Electronic, automation and communications engineering, electronics
Funding: This work was supported by the Academy of Finland under grants no. 313041 (PRISMA: Positioning-aided Reliably-connected Industrial Systems with Mobile mmWave Access) and 318927 (6Genesis Flagship).
Academy of Finland Grant Number: 313041
Detailed Information: 313041 (Academy of Finland Funding decision)
318927 (Academy of Finland Funding decision)
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