Wireless Channel Delay Spread Performance Evaluation of a Building Layout

TL;DR

This paper introduces a new method for evaluating building wireless performance during design by focusing on channel delay spread, proposing a novel metric and analytical model validated through simulations.

Contribution

It presents the first building wireless performance evaluation theory based on delay spread, including a new metric and an analytical model for quick assessment.

Findings

Building design significantly affects RMS delay spread.

The proposed DS gain metric effectively evaluates channel performance.

Numerical results highlight the importance of considering DS gain in building design.

Abstract

Evaluating a building's wireless performance during the building design process is a new paradigm for wireless communications and building design. This paper proposes the earliest building wireless performance (BWP) evaluation theory focusing on the channel delay spread (DS). The novel contributions of this paper lie in the following aspects. 1) We define a new metric called DS gain, which is the first metric for evaluating the channel DS performance of a building under design. 2) We propose an analytical model to compute the metric quickly and accurately. 3) The proposed scheme is validated via Monte-Carlo simulations under typical indoor scenarios. Numerical results reveal that building design has a clear impact on the root mean square (RMS) DS. In the future, architects need to design a building taking its DS gain into account carefully. Otherwise, indoor networks in it will suffer from severe signal inter-symbol interference (ISI) due to an over large DS gain.