Abstract:In this paper, we propose a novel hybrid automatic gain control (AGC) algorithm as a solution to improve the signal reception performance based on the IEEE 802.15.4a chirp spread spectrum (CSS). The CSS signals are composed of a number of full-chirps, which are separated by long guard time. A full-chirp is composed of two low-band sub-chirps and two high-band sub-chirps whose frequency characteristics are different because of multipath fading in indoor environment. Due to long guard time and wideband propertie… Show more
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