Abstract: A receiver and method of correcting for amplitude and phase errors in a received complex signal are provided. After separating and processing the complex signal into its I and Q component signals, the magnitude of each of the I and Q signals is obtained. The magnitudes are averaged over a predetermined time period and the average used to correct the amplitude of the I and Q signals. Each amplitude-corrected signal is then rotated by 45° and the average magnitude of the rotated signal determined. The amplitude of the rotated signal is then corrected to provide resultant I and Q signals, which are orthogonal to each other.

Abstract: An interference device and method of interfering with signals from a UMTS base station in a particular area are disclosed. The interference device receives a signal from the base station intended for a mobile device to initiate a communication session. The interference device synchronizes to the S-CCPCH and alters the TCFI and/or the data in the data field of the slot so that it is not longer correct. Time-shifted copies of the altered signal are then multiplexed and transmitted to the mobile device as a jamming signal. The jamming signal is received by the mobile device and causes the mobile device to be unable to determine the data of the original signal from the base station.

Abstract: A receiver and method of correcting for amplitude and phase errors in a received complex signal are provided. After separating and processing the complex signal into its I and Q component signals, the magnitude of each of the I and Q signals is obtained. The magnitudes are averaged over a predetermined time period and the average used to correct the amplitude of the I and Q signals. Each amplitude-corrected signal is then rotated by 45° and the average magnitude of the rotated signal determined. The amplitude of the rotated signal is then corrected to provide resultant I and Q signals, which are orthogonal to each other.

Abstract: An interference device and method of interfering with signals from a UMTS base station in a particular area are disclosed. The interference device receives a signal from the base station intended for a mobile device to initiate a communication session. The interference device synchronizes to the S-CCPCH and alters the TCFI and/or the data in the data field of the slot so that it is not longer correct. Time-shifted copies of the altered signal are then multiplexed and transmitted to the mobile device as a jamming signal. The jamming signal is received by the mobile device and causes the mobile device to be unable to determine the data of the original signal from the base station.

Abstract: An interference system and method of interfering with signals from a Universal Mobile Telecommunications System (UMTS) mobile device in a particular area are disclosed. The mobile device receives an access grant from a UMTS base station. The mobile device transmits a response to the base station. An interference device in the same area as the mobile device also receives the access grant and sends a corruption signal that interferes with the response to the base station.