General Test Systems Inc.

Penghui Shen

Wei Yu

Yihong Qi

Qingchun Luo

The present disclosure provides a method and system for testing wireless performance of a wireless terminal configured as a DUT having multiple transmitting antennas and placed in an anechoic chamber. The method includes: obtaining antenna pattern of the multiple transmitting antennas, and importing the antenna pattern into a channel emulator; selecting a same number of testing antennas in the anechoic chamber as a number of the transmitting antennas; the selected testing antennas receiving a signal from the transmitting antennas, and sending the signal to the channel emulator, the channel emulator processing the signal to generate an analog signal and sending the analog signal to an analog base station; and the analog base station receiving the analog signal and performing a throughput test to obtain an uplink wireless performance test of the DUT.

Method and system for testing wireless performance of wireless terminal

A method for testing radio frequency performance of a wireless device is provided. Power level reporting information of a device under test is obtained. A propagation matrix is obtained based on the power level reporting information. An inverse matrix is obtained based on the propagation matrix to form a virtual cable between an output port of an instrument and a receiver port of the device under test. A throughput test signal is transmitted through the virtual cable to perform a performance test on the device under test and to obtain a test result of the radio frequency performance.

Radio frequency performance testing method and apparatus of wireless device, and tester

Disclosed are a method and apparatus for measuring wireless performance of a receiver of a wireless terminal, and a non-transitory computer readable storage medium. The method includes the following. A measured signal of a receiver to be measured is determined. Measured signals of other receivers except the receiver to be measured are zero. Multiple transmitted signals are determined based on the measured signals. The multiple transmitted signals are transmitted through multiple measurement antennas. When a bit error rate of the receiver to be measured does not equal a preset bit error rate, the measured signal is adjusted, determining the multiple transmitted signals based on the updated measured signal. When the bit error rate equals the preset error rate, a power of the measured signal is determined as the radiant sensitivity of the receiver to be measured.

Method and apparatus for measuring wireless performance of receiver of wireless terminal

The present disclosure provides a method and a device for measuring a radiation pattern of an antenna array. The method includes: obtaining a plurality of array radiation patterns corresponding to a plurality of array elements and a plurality of center positions corresponding to the plurality of array radiation patterns; feeding a preset port excitation to the antenna array; obtaining a plurality of sets of measurement data of the antenna array at a plurality of corresponding measurement points in a far field of the antenna array; obtaining an aperture field excitation based on the plurality of array radiation patterns, the plurality of center positions, positions of the plurality of measurement points and the plurality of sets of measurement data; and obtaining a radiation pattern of the antenna array at a target position based on the aperture field excitation, the plurality of array radiation patterns and the plurality of center positions.

Method and device for measuring radiation pattern of antenna array, and computer readable storage medium

A method for testing wireless performance of a MIMO wireless terminal includes: obtaining antenna pattern information of a plurality of antennas of the MIMO wireless terminal tested in an electromagnetic anechoic chamber; further obtaining a test signal according to the antenna pattern information of the MIMO wireless terminal; calibrating the test signal by using an error calibration joint matrix of the MIMO wireless terminal so as to obtain a transmitting signal for testing; and finally feeding the transmitting signal for testing into a plurality of measurement antennas of the electromagnetic anechoic chamber and transmitting the transmitting signal to the wireless terminal through the measurement antennas so as to test the wireless terminal.

Method for testing wireless performance of MIMO wireless terminal

A measurement system including an anechoic chamber, a turntable, N measurement antennas, in which N is a natural number and N&#x2265;11, in which a spherical coordinate system is established by taking a center of a measured piece as an origin and a coordinates of the i (i=1, 2, 3, . . . , N) measurement antenna is A(&#x3c1;, &#x3b8;, &#x3c6;), (i=1, 2, 3, . . . , N), in which &#x3b8;is a positive integral multiple of 15&#xb0;, and at least one measurement antenna is arranged at a position where the angle &#x3b8;is 15&#xb0;, 30&#xb0;, 30&#xb0;, 45&#xb0;, 60&#xb0;, 75&#xb0;, 90&#xb0;, 105&#xb0;, 120&#xb0;, 135&#xb0;, 150&#xb0; or 165&#xb0; correspondingly; and 0&#x2264;&#x3c6;&#x2264;360&#xb0;, and the N measurement antennas are not located in the same plane. The present disclosure can create a measurement environment with small coupling interference and low reflection between the measurement antennas in a relatively small anechoic chamber, improving the measurement accuracy.

Measurement system

Provided are a method and a device for generating a MIMO test signal which is configured to test a performance of MIMO wireless terminal. With the method, the plurality of space propagation matrixes of the MIMO testing system are acquired by performing the phase shift transformation on the plurality of calibration matrixes of the MIMO testing system, the target space propagation matrix having the isolation degree meeting the preset condition is determined according to the maximum amplitude value of elements in each inverse matrix of the plurality of space propagation matrixes, and the transmitting signal for test is generated by a calculation according to the throughput testing signal acquired by the pre-calculation and the target calibration matrix corresponding to the target space propagation matrix.

Growing community of inventors

Guangdong, China

Penghui Shen