Zhang, Z; Wang, S; Huang, Z; Zhang, Q; Loh, T H; Yang, Y; Qin, F (2026) Area Tracing: An Efficient Modeling Framework of Regional Channel Impulse Response in Multipath Fading Environments. IEEE Transactions on Antennas and Propagation, 74 (7). pp. 6914-6929. ISSN 0018-926X

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Abstract

The accurate modeling of global channel information in the given area is crucial for the advancement of future wireless systems, which is usually named as Channel Knowledge Map (CKM). Nonetheless, the Channel Impulse Response (CIR) serves as the essential model of mutlipath fading channel, and consequently the regional CIRs should be the most efficient way to generate CKMs in any domain. However, classical Ray Tracing (RT) methods can only provide point-wise CIR at discrete locations, which is less efficient to obtain the regional CIR. To overcome this limitation, this paper proposes an efficient Area Tracing (AT) method to obtain the regional CIR. This method first designs a shadow testing algorithm that partitions the complex visible area of interesting into several sub-areas, within which all locations are affected by the same group of equalized propagation sources. Then, the CIR at any locations within the area can simply be computed without repeating the traverse of RT processes. Extensive experiments validate both the feasibility and efficiency of proposed AT method with a computational cost 46.9 times lower than the classical RT method while keeping the same accuracy.

Item Type:	Article
Subjects:	Electromagnetics > Wireless Communications
Divisions:	Electromagnetic & Electrochemical Technologies
Identification number/DOI:	10.1109/TAP.2026.3681784
Last Modified:	20 Oct 2026 13:14
URI:	https://eprintspublications.npl.co.uk/id/eprint/10572