Verfahren und Anordnung mit Senderleistungssteuerung durch Messung des Signal-Interferenz-Verhältnises in einem CDMA-Kommunikationssystem

摘要

The invention provides a technique for measurement of a signal to interference power ratio wherein an SIR can be measured with a higher degree of accuracy without being influenced by a fast fading environment or an inter-station interference or noise environment. A signal to interference power ratio measuring apparatus includes a plurality of interference replica signal production sections (1-1 to 1-n) for performing inverse diffusion processing for input signals originating from a received signal, performing temporary decision of information symbols regarding the input signals, performing diffusion processing again for the input signals and outputting resulting signals as interference replica signals, a plurality of subtractors (2-1 to 2-n) for subtracting the interference replica signals from the received signal, an interference power detection section (3) for detecting interference power information, a signal power detection section (20) for detecting signal power information, and a signal to interference power ratio calculation section (62) for calculating signal to interference power ratios from the interference power information and the signal power information.