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Byline: Sung-Hong Wie (1), Dong-Ho Cho (2) Keywords: forward link; other-cell interference; integrated services; multicode CDMA Abstract: This paper analyzes the other-cell interference of forward link channel in multicode CDMA system supporting a voice and data service. In this system, voice communication can be served by a basic code and data service can be supported by multiple codes. Using this analysis, we can get the approximated capacity of forward link. We describe the effect of data user activity and received power level ratio between a data service and a voice service. Also, this paper describes the forward link capacity and the power ratio of data power to voice power according to the change of FER threshold for data service. Author Affiliation: (1) Telecommunication Systems Division, Information &amp Communication Business, Samsung Electronics Co., Ltd., Suwon, P.O. Box 105, 416 Maetan-3dong, Paldal-gu, Suwon-si, Gyeonggi-do, 442-742, Korea (2) Communication and Information System Laboratory, Department of Electrical Engineering &amp Computer Science, Korea Advanced Institute of Science and Technology, 373-1 Kusong-Dong, Yusong-Gu, Taejon, 305-701, Korea Article History: Registration Date: 03/10/2004