| dc.description.abstract | Nowadays, IEEE 802.11n wireless local-area networks (WLAN) has become popular around the world
due to advantages in capacity, reachability, and affordability. In WLAN, any host or terminal device is
connected with an access-point (AP) using wireless signal. Thus, the AP transmission power should be
optimized for improving the performance in WLAN, considering the capacity and interference. Previously,
we proposed an AP transmission power optimizationmethod for a single AP considering the link capacity
to a host. In this paper, we explore an AP transmis sion power optimization method for two concurrently
communing APs in WLAN. Unlike the single AP case, it needs to consider the interference between two
APs, too. As a simple method, either the maximum or minimum power is selected for each AP such that
it maximizes the signal-to-noise ratio (SNR) among the four combinations. The accuracy of this proposal
is investigated through extensive experiments using Raspberry Pi APs in eight network fields with various host locations. The results show that it provides the best performance except for three cases among
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