직교 확산을 위한 채널 확산 코드 할당 장치 및 방법
김재흥, 김정임, 심재용, 김태중, 방승찬, 채종석, 이혁재, 이남희
- 7586973 (2009.09.08)
99MR1100, 차세대 이동통신 기반기술 연구,
- A method for converting source data to a channel-modulated signal having a plurality of pairs of in-phase (I) and quadrature-phase (Q) data in a mobile station, wherein the mobile station uses at least one channel, includes the steps of: a) encoding the source data to generate at least one data part and a control part; b) generating at least one spreading code to be allocated to the channel, wherein each spreading code is selected on the basis of a data rate of the data part and the control part and spreading codes are selected so that two consecutive pairs of the I and Q data are correspondent to two points located on same point or symmetrical with respect to a zero point on a phase domain; and c) spreading the control part and the data part by using the spreading code, to thereby generate the channel-modulated signal. The method is capable of improving a power efficiency of a mobile station by reducing a peak-to-average power ratio in a mobile communication system.
- KSP 제안 키워드
- Average Power, Communication system, Data Message, In-phase, Mobile station(MS), Modulated signal, Orthogonal Variable Spreading Factor(OVSF), Peak to average Power ratio(PAPR), Power Efficiency, Spreading factor, data rate, mobile communication, mobile communication system, phase domain, power ratio, spreading code, zero point