%0 Journal Article
%A DAI Jia
%A GAO Fei
%A GUO Li-li
%A LI Qing-wei
%T The Performance Analysis of Spectrum Overlap Degree Impacting to Spread-Spectrum System
%D 2015
%R 10.13190/j.jbupt.2015.06.023
%J Journal of Beijing University of Posts and Telecommunications
%P 115-119
%V 38
%N 6
%X <p>The classic bit error rate (BER) performance analysis comes from the time domain and the existing research aimed at the condition of rectangular pseudo-random code waveform (PCW). A method was proposed to analyze the BER performance of the spread-spectrum system by the overlap between the spectrum of the spread-spectrum signals and the interference. The concept of spectrum overlap degree (SOD) was given. It can make theory analysis and intuitionistic physical conception consistent so that the BER in the frequency domain can be deduced. Besides, the mathematical expression of BER and SOD was given and BER was proved to be proportional to SOD. Analysis and derivation about SOD gives a criterion to design spread spectrum signal to avoid interference. Furthermore, The given BER is suitable for arbitrary PCW. The validity about SOD was verified through simulation.</p>
%U https://journal.bupt.edu.cn/EN/10.13190/j.jbupt.2015.06.023