Comparative Performance Analysis of Single Linear Chirp Based Communication-Like Jamming Schemes in Chirp Spread Spectrum Systems

2021 ◽  
Vol 46 (4) ◽  
pp. 634-637
Author(s):  
Byung-Seong Kim ◽  
Yoan Shin
Keyword(s):  
Performance Analysis ◽  
Spread Spectrum ◽  
Comparative Performance ◽  
Linear Chirp ◽  
Chirp Spread Spectrum ◽  
Spread Spectrum Systems

Performance analysis of chirp spread spectrum system under mobility scenario

2020 ◽  
Vol 43 ◽  
pp. 101233
Author(s):  
Marwa Qaraqe ◽  
Saud Althunibat ◽  
Osamah S. Badarneh ◽  
Raed Mesleh
Keyword(s):  
Performance Analysis ◽  
Spread Spectrum ◽  
Chirp Spread Spectrum

scholarly journals A Low-Complexity Demodulation for Oversampled LoRa Signal

2021 ◽  
Author(s):  
Vincent Savaux
Keyword(s):  
Performance Analysis ◽  
Spread Spectrum ◽  
Fourier Transforms ◽  
Additive White Gaussian Noise ◽  
Low Complexity ◽  
Discrete Fourier Transforms ◽  
Rayleigh Channel ◽  
Nyquist Rate ◽  
Chirp Spread Spectrum ◽  
Demodulation Method

This paper deals with a method of demodulation for oversampled LoRa signal. The usual maximum likelihood (ML) based demodulation method for LoRa chirp spread spectrum (CSS) waveform is dedicated to signals sampled at Nyquist rate, whereas considering oversampled signals may improve the performance of the LoRa demodulation process. In this respect, when an oversampling rate (OSR) 2 is assumed, the method suggested in this paper consists in applying two demodulation processes to the even and odd samples of the oversampled LoRa signal, and then combining the results. This principle is then generalized to any OSR, and we show that the complexity of the method is low since it only involves discrete Fourier transforms (DFT). Moreover, a performance analysis in terms of symbol and bit error rate (SER and BER) is presented considering both additive white Gaussian noise (AWGN) and Rayleigh channel models. Simulations show the relevance of the method and the performance analysis as a gain of 3 dB is achieved by the demodulation at OSR 2 compared with OSR 1.

scholarly journals Multiple Linear Chirp Based Transmission Scheme for IEEE 802.15.4a Chirp Spread Spectrum

2015 ◽  
Vol 40 (10) ◽  
pp. 1937-1939
Author(s):  
Kwang-yul Kim ◽  
Seung-woo Lee ◽  
Yong-sin Kim ◽  
Jae-seang Lee ◽  
Jin-young Kim ◽  
...  
Keyword(s):  
Spread Spectrum ◽  
Transmission Scheme ◽  
Linear Chirp ◽  
Ieee 802.15.4A ◽  
Chirp Spread Spectrum
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