Two-step automatic gain control algorithm applicable to chirp spread spectrum device

Liu, Hui; Kim, Yeong-Sam; Jang, Seong-Hyun; Chong, Jong‐Wha

doi:10.1109/icce.2010.5418713

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Architecture Of the Css Receiver1

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“…Such random variation of the received signal power leads to quantization noise during analog-to-digital conversion in the receiver. The main goal of AGC is to minimize the quantization noise by adapting the received signal power at an appropriate level [23–25]. In this paper, we apply Hui's algorithm that considers both the adaptation time and stability for CSS in [25] for the proposed CSS transceiver.…”

Section: Architecture Of the Css Receivermentioning

confidence: 99%

Chirp Spread Spectrum Transceiver Design and Implementation for Real Time Locating System

Kim

Chong

2015

International Journal of Distributed Sensor Networks

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A chirp spread spectrum (CSS) transceiver architecture for IEEE 802.15.4a is proposed and implemented. In the transmitter, the size of the read-only memory that stores CSS signal samples for the chirp modulator is reduced by removing duplicate samples among subchirps. In the receiver, a matched filter is utilized to remove the other band noise caused by the band hopping property of CSS. A robust time synchronizer and chirp demodulator based on the matched filter are proposed. Low complexity architectures of the matched filter and biorthogonal decoder are also proposed. All of the proposed architectures are implemented in the fieldprogrammable gate array chip and verified.

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Section: Architecture Of the Css Receivermentioning

confidence: 99%