Investigation of the influence of the effect of communication channel aging on the characteristics of precoding in the MU-MISO system at different speeds of movement of subscribers
https://doi.org/10.55648/1998-6920-2024-18-4-32-42
Abstract
The paper deals with the impact of measured channel state delays caused by subscriber movement and the delay-related effects of channel aging on the performance of DFT codebook precoding in a downstream multi-user MISO system. The channel estimate is obtained using the MMSE algorithm. The paper discusses a precoding algorithm based on codebooks and a method based on numerical optimization for calculating precoding weight vectors in order to increase the total spectral efficiency of a multi-user system.
To carry out numerical modeling, the QUADRIGA radio channel modeling package was used, which allows us to obtain the required volume of MISO channel implementations when subscribers move at different speeds. A comparison of the obtained precoding characteristics of the compared algorithms in a channel with movement of subscribers and the presence of spatial correlation is performed based on the distribution function of the average spectral efficiency over a set of users.
About the Authors
A. A. Kalachikov
Siberian State University of Telecommunications and Information Science (SibSUTIS)
Russian Federation
Russian Federation
Aleksander A. Kalachikov - Сand. of Sci. (Engineering), Lecturer of the Department of Radio Systems,
86, Kirov St., Novosibirsk, 630102.
I. I. Rezvan
Siberian State University of Telecommunications and Information Science (SibSUTIS)
Russian Federation
Russian Federation
Ivan I. Rezvan - Сand. of Sci. (Engineering), Lecturer of the Department of Radio Systems,
86, Kirov St., Novosibirsk, 630102.
A. V. Stenin
Siberian State University of Telecommunications and Information Science (SibSUTIS)
Russian Federation
Russian Federation
Aleksander V. Stenin - Senior Lecturer of the Department of Radio Systems,
86, Kirov St., Novosibirsk, 630102.
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Review
For citations:
Kalachikov A.A., Rezvan I.I., Stenin A.V. Investigation of the influence of the effect of communication channel aging on the characteristics of precoding in the MU-MISO system at different speeds of movement of subscribers. The Herald of the Siberian State University of Telecommunications and Information Science. 2024;18(4):32-42. (In Russ.) https://doi.org/10.55648/1998-6920-2024-18-4-32-42
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