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A Study on Receiver Sensitivity Measurement using Pilot $E_c/I_o$ Compensation Method at CDMA Communication Network  

Jeong, Ki-Hyeok (MTI Co., Ltd.)
Ra, Keuk-Hwan (Department of Electronics Engineering, Kwangwoon University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.44, no.8, 2007 , pp. 9-16 More about this Journal
Abstract
Currently, the measurement of RF parameters for a base station in operation is typically limited to easily measured forward path items. In this paper, the forward monitoring ports of base stations are used to measure the reverse RF performance. The system has been implemented and effectiveness has been proven on an operating base station. The receiver sensitivity is measured using an internal CDMA modem which is used to monitor the output power based on closed loop power control when the modem is connected to the base station via a voice call. In order to improve accuracy, in addition to the modem Tx adjust(TxAdj) parameter, the detector's actual measurement is used. For accurate receiver sensitivity, the measurement should be made when there is no traffic which is not possible on an operating base station. Therefore, pilot channel chip energy to received signal power spectral density ratio$(E_c/I_o)$ compensation method is used to offset the receiver sensitivity degradation with voice traffic increase.
Keywords
Receiver sensitivity; $E_c/I_o$ CDMA modem; Pilot Power;
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