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Performance Comparison of the OFDM/SFH and OFDM/DS Systems in the Jamming Channel  

박종현 (충북대학교 전자공학과 및 컴퓨터정보통신연구소)
김상우 (충북대학교 전자공학과 및 컴퓨터정보통신연구소)
유흥균 (충북대학교 전자공학과 및 컴퓨터정보통신연구소)
이상태 (한국표준과학연구원 정보전산그룹)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.14, no.11, 2003 , pp. 1149-1155 More about this Journal
Abstract
OFDM/SFH(orthogonal frequency division multiplexing/slow frequency hopping) system is the combination of OFDM communication system with frequency hopping(FH) method and OFDM/DS(orthogonal frequency division multiplexing/direct sequence) system combines the OFDM communication system with direct sequence(DS) method in terms of PN(pseudo noise) sequence. These two systems are also can be used for anti-jamming. In this study we analyze performances of OFDM/SFH system and OFDM/DS system with the equal information rate in partial band jamming and tone jamming channel. We find BER(bit error rate) in the variation of JFR(jamming fractional ratio) and JSR(jamming to signal power ratio) of the partial band jamming. Also, BER is found in the several JSR of the single tone or multi tone jamming. OFDM/DS system shows better performance than OFDM/SFH system in partial band jamming environment. OFDM/DS system has about 2.5 ㏈ SNR(signal to noise power ratio) gains than OFDM/SFH system when JFR=4/16 and JSR=0 ㏈ to meet BER=10$\^$-3/. However, OFDM/SFH system has about 3 ㏈ SNR gains than OFDM/DS system at single tone jamming of JSR=5 ㏈. In multi tone jamming, performance of OFDM/SFH system is considerably degraded than OFDM/DS system.
Keywords
OFDM/SFH; OFDM/DS; Partial Band Jamming; Tone Jamming; JFR(Jamming Fractional Ratio);
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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