SWAN: Stitched Wi-Fi ANtennas

Authors:
Yaxiong Xie Nanyang Technological University
Yanbo Zhang Nanyang Technological University
Jansen Christian Liando Nanyang Technological University
Mo Li Nanyang Technological University

Introduction:

This paper presents the authors' experience in designing, implementing, testing, and applying a general-purpose antenna extension solution with commodity Wi-Fi.

Abstract:

This paper presents our experience in designing, implementing, testing, and applying a general-purpose antenna extension solution with commodity Wi-Fi. The proposed solution, SWAN, builds an array of stitched antennas extended from the radio chains of commodity Wi-Fi. SWAN has low hardware cost and provides easy-to-use interfaces embedded in the Linux kernel. Two application cases for wireless sensing and communication are presented that proves the usefulness of the solution. SWAN is able to provide over 3× performance improvement on Wi-Fi azimuth estimation and localization and over 30% improvement on Wi-Fi throughput over original Wi-Fi AP with three fixed antennas.

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