摘要:
A system for testing a communication device includes a testing module, a measurement module, and a control module. The testing module transmits one or more first test signals based on a first test sequence. The measurement module acquires test data by receiving one or more second test signals that are based on the one or more first test signals. The control module initiates the first test sequence in response to receiving a start test signal from an analysis system. The control module transfers the test data to the analysis system in response to a transfer data request. The control module initiates a second test sequence while the analysis system is analyzing the test data. The testing module generates and transmits one or more third test signals based on the second sequence when the second test sequence has been initiated.
摘要:
A system and method of providing driver software to a test controller to facilitate testing by a wireless transceiver tester of a device under test (DUT). Using the wireless transceiver tester, executable tester instructions are accessed from one or more computer readable media and in accordance therewith bi-directional signal communications are established between the wireless transceiver tester and the test controller, and between the wireless transceiver tester and the DUT. Further accessed are executable driver instructions, including a plurality of executable driver program instructions for driving at least one of the wireless transceiver tester and the DUT, which are communicated to the test controller.
摘要:
A test signal interface and method for allowing sharing of multiple test signal generators among multiple devices under test (DUTs). Digital baseband test signals generated by the multiple test signal generators are combined and converted to a baseband analog signal for conversion to a radio frequency (RF) signal for testing the multiple DUTs.
摘要:
A signal analyzer and method for measuring signal compression levels of one or more individual orthogonal frequency division multiplexed (OFDM) signals among a plurality of OFDM signals within a composite signal.
摘要:
A method for testing a wireless transceiver embedded within a wireless data communication system that also includes a host processor with minimal interaction between the wireless transceiver and the host processor during such testing. The wireless signal interface between the wireless data communication system and external test equipment is used to convey test initiation or data signals from the external test equipment to the wireless data communication system, and responsive data or acknowledgement signals from the wireless data communication system to the external test equipment.
摘要:
An apparatus for testing a communication circuit includes a dynamic range module. The dynamic range module includes signal strength adjustment module and a control module. The signal strength adjustment module adjusts a peak signal strength of test packets transmitted according to a predetermined test sequence. The control module selectively controls the signal strength adjustment module to adjust the peak signal strength based on the predetermined test sequence.
摘要:
A Global System for Mobile (GSM) cellular system transceiver with time division duplexed operations for receiving a data signal, monitoring received signal strength and transmitting a data signal during a single time frame. Multiple data registers are used to store the phase lock loop (PLL) frequency control data, e.g., during the last time slot (slot 7) of the prior time frame (or elsewhere in the prior time frame where time permits). Also during slot 7 of the prior time frame, the PLL is programmed using the first data set for the data reception operation to be performed during one or more of the initial time slots (e.g., time slots 0-3) of the present time frame. During the next time slot (e.g., slot 4), the PLL is programmed using the second data set for the signal strength monitoring operation to be performed during that same time slot. During the next time slot (e.g., slot 5), the PLL is programmed using the third data set for the data transmission operation to be performed beginning in that same time slot. By prestoring all three PLL frequency control data sets, such data sets are immediately available when later programming the PLL, thereby reducing the PLL setup time needed prior to each use. Consequently, an integer PLL can be used instead of a fractional PLL while still achieving a sufficiently fast combined setup and lock time, thereby minimizing integrated circuit area and power requirements.
摘要:
A wireless communication system (e.g., GSM) receiver including analog (e.g., analog channel select) and digital filters, and bandwidth control circuitry which operates during at least one mode (e.g., a synchronization mode) to effectively narrow the combined pass band of the analog and digital filters thus reducing the bandwidth of noise passing therethrough, and a method for reducing noise pass band (preferably by data rotation) in at least one mode (e.g., a synchronization mode) but not all modes of wireless communication system receiver. Preferably,the bandwidth control circuitry passes through the output of an analog-to-digital converter (indicative of data) to the digital filter during at least one operating mode, and the bandwidth control circuitry rotates the data in the complex domain (during at least one other mode) before the data is digitally filtered. Rotation of the data is equivalent to rotation of the digital filter pass band, so that (during synchronization) the combined pass band of the analog and digital filters is effectively narrowed but is still sufficiently wide to include the frequency of a frequency correction burst. By performing data rotation in the complex domain, noise bandwidth reduction can be accomplished with simple logic circuitry configured to perform simple logic operations.
摘要:
A system, method and article of manufacture are provided for utilizing a wireless link in an interface roaming network. A wireless link is utilized to scan a vicinity of the wireless link to detect one or more interface clients in the vicinity. The wireless link then transmits to an infrastructure server information relating to the interface clients detected in the vicinity. Based on the transmitted information, the infrastructure server then selects one of the interface clients. Subsequently, the wireless link receives a notification from the infrastructure server of the selected interface client and a connection between the infrastructure server and the selected interface client is initiated for communication therebetween.