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Analysis and Optimization of the Phase Noise of the Local Oscillator Signal for the CDMA Mobile Station  

이상원 (한국항공대학교 항공전자공학과)
한명석 (대천대학교 컴퓨터전자전기학부)
김학선 (한밭대학교 정보통신·컴퓨터공학부)
홍신남 (한국항공대학교 항공전자공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.27, no.4C, 2002 , pp. 380-387 More about this Journal
Abstract
In this paper, the effect of the phase noise of a local oscillator on the ACPR of a transmitter and the reception sensitivity of a receiver to meet the TIA/EIA/IS-98-D for the CDMA mobile station was analyzed. And the optimum condition for performance of the local oscillator was suggested. It was found that the phase noise level of the local oscillator in a receiver and a transmitter should be below -138.3dBc/Hz and -120dBc/Hz, respectively, at 900kHz offset. It was confirmed that the reception sensitivity and ACPR efficiency were satisfactory when the signal of the local oscillator to the down-converter of a receiver with the phase noise level of less than -138.3dBc/Hz is supplied to the up-converter of the transmitter.
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