http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
MQAM, DPSK, OFDM-MQAM 과 OFDM-DPSK에서 위상잡음에 의한 Symbol Error Rate
권요한,김인석 경희대학교 레이저공학연구소 2006 레이저공학 Vol.17 No.-
In this paper, SER(Symbol Error Rate) variation and effects on SER by phase noise at various frequency offset of the local oscillator in digital communication systems are gerneralyzed for MQAM (M-ary Quadrature Amplitude Modulation), DPSK (Differential Phase Shift Keying), OFDM (Orthogonal Frequency Division Multiplex)-MQAM and OFDM-DPSK, and compared those with the ideal cases, which have no phase noise, through the MATLAB simulation. And the ratio between modulation bandwidths and the SER on the various frequency offsets on the above modulation methods have been analyzed for the system requirement of minimum phase noise characteristics. From this study, we have confirmed that the most sensitive modulation method on the phase noise is OFDM-MQAM.