A New Dual-Band Filtering Method for Chirp Spread Spectrum

Kim, Yeong-Sam; Chong, Jong‐Wha; Liu, Shouyin

doi:10.1109/wicom.2008.499

Cited by 4 publications

(5 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We compare the BER performance of the proposed architecture with those of the conventional ones as described in [11]. In [11], the receiver architecture based on autocorrelation and the receiver architecture that adopts the dual-band filtering method are introduced. Figure 8 shows the BER performances of the proposed and conventional architectures.…”

Section: Ber Performance Of the Proposed Receiver Architecturementioning

confidence: 99%

“…Using without normalizing will yield a different performance in different noise environments as in [21]. To resolve this problem, should be normalized by using as given The proposed algorithm, SNR = −6.5 dB in (10), and the decision variable, , as in (11), which uses and is proposed in this section. Consider The start frame delimiter is composed of four symbols, as in [1].…”

Section: Time Synchronizermentioning

confidence: 99%

“…In contrast, there are few studies on the transceiver architecture of CSS. Jeong et al [10] proposed the rake receiver for CSS, and Kim et al [11] introduced the autocorrelation-based receiver and a receiver that adopts the dual-band filtering method. Yaqoob and Chong [2] proposed a decision feedback receiver that can be applied to CSS.…”

Section: Introductionmentioning

confidence: 99%

“…Test results of the 0th submatched filter.Flag of packet detecting a n in(11) b n in (11) Test result of the packet detector.…”

mentioning

confidence: 99%

See 3 more Smart Citations

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

Kim

Chong

2015

International Journal of Distributed Sensor Networks

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Ber Performance Of the Proposed Receiver Architecturementioning

confidence: 99%

Section: Time Synchronizermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…Test results of the 0th submatched filter.Flag of packet detecting a n in(11) b n in (11) Test result of the packet detector.…”

mentioning

confidence: 99%

See 2 more Smart Citations

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

Kim

Chong

2015

International Journal of Distributed Sensor Networks

Self Cite

View full text Add to dashboard Cite

show abstract

“…Then, the receiver dispreads the signal energy and differentially bi-orthogonal decodes the output of the low-pass filter as in [6].…”

Section: The Proposed Algorithmmentioning

confidence: 99%

Efficient implementation of hybrid automatic gain control algorithm for chirp spread spectrum

Liu

Kim

Jang

et al. 2009

Proceedings of the 2nd International Conference on Interaction Sciences: Information Technology, Culture and Human

Self Cite

View full text Add to dashboard Cite

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 properties of the CSS, it is not appropriate to make use of conventional AGC algorithm which only uses one window size in order to estimate the power of signal and regardless of the different bands. The proposed hybrid AGC algorithm is made up of two steps: the first step is synthetically to utilize large window size and small window size, simultaneously improving performance of adaptation time and stability; the second step is based on two AGCs which are designed to be matched well with low-band and high-band signals separately.

show abstract

Dual-band automatic gain control algorithm for chirp spread spectrum over indoor fading channels

Liu

Kim

Jang

et al. 2009

2009 IEEE International Conference on Network Infrastructure and Digital Content

View full text Add to dashboard Cite

A New Dual-Band Filtering Method for Chirp Spread Spectrum

Cited by 4 publications

References 2 publications

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

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

Efficient implementation of hybrid automatic gain control algorithm for chirp spread spectrum

Dual-band automatic gain control algorithm for chirp spread spectrum over indoor fading channels

Contact Info

Product

Resources

About