# Statistical analysis in cellular systems for channel capacity improvement with dynamic pilots across different angles users

## TL;DR

This paper introduces a new method to improve wireless communication by optimizing pilot signals for users at different angles.

## Contribution

A novel sub-block design approach that harmonizes coherence time across different user angles while keeping pilot count constant.

## Key findings

- The proposed method improves spectral efficiency by up to 10%.
- It enhances channel state information precision in angle-dependent scenarios.

## Abstract

Accurate channel state information (CSI) is crucial for optimizing wireless communication systems. In scenarios with varying user-to-base station angles, the angle-dependent coherence time impacts conventional pilot strategies. Due to small angles, the coherence time of the user decreases dramatically because of doppler shift, which causes an increase in the number of pilots. We introduces an innovative sub-block design approach for systems with different user angles. This method harmonizes coherence time of high and low-angle users, while maintaining a constant pilot count. This not only improves spectral efficiency but also ensures accurate channel estimation. Through simulations, we demonstrate the effectiveness of our approach in enhancing both spectral efficiency upt to \documentclass[12pt]{minimal}
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\begin{document}$$10 \%$$\end{document}10% and CSI precision. This breakthrough contributes to the advancement of channel estimation techniques in scenarios with angle-dependent coherence time, offering practical benefits to wireless communication systems.