Patent ID: 7145935
Filing Date: 2006-12-05
Classification: H04B,H04J

Abstract:
1. In a transmitting/receiving system using pilot signals orthogonal between transmitting antennas for separating signals of transmitting antennas from each other at a receiver, a signal-to-interference ratio measuring apparatus of a multiple antenna high data rate packet transmission system, comprising: signal energy measuring means for measuring signal energy by synthesizing after coherently integrating and non-coherently integrating values that are obtained by correlating a received signal with pilot patterns equal to the pilot patterns of transmitted antenna signals, respectively; interference energy measuring means for measuring interference energy by coherently integrating and non-coherently integrating after correlating the received signal with another pattern that is orthogonal to the pilot patterns of the transmitted antenna signals but is not transmitted; and signal-to-interference ratio measuring means for measuring signal-to-interference ratio by using the measured signal energy and the measured interference energy.