Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 2

CSS Related Publications

2 Bit-Error-Rate Performance Analysis of an Overlap-based CSS System

Authors: Seokho Yoon, Taeung Yoon, Dahae Chong, Sangho Ahn

Abstract:

In a chirp spread spectrum (CSS) system, the overlap technique is used for increasing bit rate. More overlaps can offer higher data throughput; however, they may cause more intersymbol interference (ISI) at the same time, resulting in serious bit error rate (BER) performance degradation. In this paper, we perform the BER analysis and derive a closed form BER expression for the overlap-based CSS system. The derived BER expression includes the number of overlaps as a parameter, and thus, would be very useful in determining the number of overlaps for a specified BER. The numerical results demonstrate that the BER derived in a closed form closely agrees with the simulated BER.

Keywords: CSS, chirp, overlap

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1 The Performance Analysis of CSS-based Communication Systems in the Jamming Environment

Authors: Seokho Yoon, Youngpo Lee, Youngyoon Lee, Sanghun Kim

Abstract:

Due to its capability to resist jamming signals, chirp spread spectrum (CSS) technique has attracted much attention in the area of wireless communications. However, there has been little rigorous analysis for the performance of the CSS communication system in jamming environments. In this paper, we present analytic results on the performance of a CSS system by deriving symbol error rate (SER) expressions for a CSS M-ary phase shift keying (MPSK) system in the presence of broadband and tone jamming signals, respectively. The numerical results show that the empirical SER closely agrees with the analytic result.

Keywords: jamming, CSS, broadband jamming, tone jamming

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