Grid-Based IRS Phase Mapping Method for Space-Time Line Coded Systems 


Vol. 47,  No. 10, pp. 1457-1467, Oct.  2022
10.7840/kics.2022.47.10.1457


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  Abstract

To overcome the severe pathloss of the terahertz communication systems, an intelligent reflecting surface (IRS) that is composed of many passive components has been vigorously studied. On the other hand, the IRS is applied to a full-spatial-diversity achieving space-time line code system to reduce the channel estimation burden at the receiver side. However, the existing IRS phase control that requires the instantaneous channel state information is difficult to directly apply to the large-scale IRS systems with an enormous number of IRS phase control elements, because the channel estimation and signaling overhead are proportional to the number of IRS elements. In this study, we proposed a new grid-based IRS phase mapping method, in which the given coverage is partitioned into the identical-size grids and the optimal phase control vector is designed for each grid. Consequently, the signaling overhead becomes proportional to the number of girds. Through designing the descent number of grids, the signaling overhead for the IRS phase control can be significantly reduced, resulting in the throughput increase as verified by the simulation.

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[IEEE Style]

J. Kim and J. Joung, "Grid-Based IRS Phase Mapping Method for Space-Time Line Coded Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 47, no. 10, pp. 1457-1467, 2022. DOI: 10.7840/kics.2022.47.10.1457.

[ACM Style]

Jaehong Kim and Jingon Joung. 2022. Grid-Based IRS Phase Mapping Method for Space-Time Line Coded Systems. The Journal of Korean Institute of Communications and Information Sciences, 47, 10, (2022), 1457-1467. DOI: 10.7840/kics.2022.47.10.1457.

[KICS Style]

Jaehong Kim and Jingon Joung, "Grid-Based IRS Phase Mapping Method for Space-Time Line Coded Systems," The Journal of Korean Institute of Communications and Information Sciences, vol. 47, no. 10, pp. 1457-1467, 10. 2022. (https://doi.org/10.7840/kics.2022.47.10.1457)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880