Proceedings of the IEEK Conference (대한전자공학회:학술대회논문집)
- 1999.11a
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- Pages.27-30
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- 1999
Vector Channel Modeling & Position Estimation using Direction Finding Methods for CDMA Mobile Wireless Systems
CDMA 환경에서 위치추정을 위한 벡터채널 모델링과 Direction Finding을 이용한 위치 추정
Abstract
A spatio-temporal vector channel model is introduced for the position location (PL) estimation problem for CDMA cellular system environment. Two common ways for the PL make use of the AOA (Angle Of Arrival) and TDOA (Time Difference Of Arrival) from a subscriber to the multiple sensors (base stations). In this paper, we applied the derived vector channel to simulate the multipath channel for the angle of the signal arrival in CDMA systems. Cross-correlation method is a good candidate among other direction finding algorithms available in literature, especially in wideband modulation as in the CDMA system. The PL estimation errors are evaluated for different channels, which are obtained as a parameter of scattering radius of the suggested model. We noted that the number of sensors (base-stations) are related to the PL errors in favor of the available data.
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