Smart antenna performance test method, apparatus and system

Abstract

The invention discloses a test method for performances of an intelligent antenna, and a device and a system thereof, which are applied to a TD-SCDMA (time division synchronous code division multiple access) system. The method comprises the steps as follows: an up useful signal and an up interfering signal are generated according to preset data and the generated signals are merged and then input to a channel simulation device; the channel simulation device configures channel simulation parameters for a plurality of channels, generates simulation signals of the plurality of channels and inputs the generated simulation signals to all receive ports corresponding to array elements of the intelligent antenna; the intelligent antenna analyzes the simulation signals and obtains a data bit stream of the simulation signals; and an RNC simulator compares the data bit stream of the simulation signals with the corresponding bit stream of the preset data and then obtains a BLER (block error rate) or a BER (bit error rate). The method for carrying out united test to a plurality of array elements of the intelligent antenna can simulate complicated network situations sufficiently so as to lead the test to receiving and demodulating performances of the antenna to be more objective and accurate.

Description

technical field [0001] The present invention relates to the field of mobile communication, in particular to a smart antenna performance testing method, device and system applied to a Time Division-Synchronous Code Division Multiple Access (TD-SCDMA) system. Background technique [0002] TD-SCDMA is a third-generation mobile communication standard proposed by China, and it is one of the three mainstream third-generation mobile communication standards in the world. Due to the relatively flexible application of frequency spectrum in the Time Division Duplex (TDD) mode and the application of technologies such as smart antennas, the application prospects of the TD-SCDMA system are becoming wider and wider. TD-SCDMA's high spectrum utilization is closely related to the application of smart antennas, and the performance of smart antennas will directly affect the overall performance of the system. [0003] Smart antenna is an advanced antenna technology. From the perspective of upl...

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Problems solved by technology

[0009] (3) Different degrees of uplink signal interference between the own cell and adjacent cells;

[0010] (4) Different degrees of Gaussian white noise interference;

[0012] (1) Since the output signal of the channel emulator is only provided to one input port of the device under test, and the other ports are connected to matching loads, it is impossible to investigate the amplitude and phase synthesis capabilities of the smart antenna uplink algorithm;

[0013] (2) Since the effect of the smart antenna algorithm is related to the correlation degree of the antenna array elements, the single-port input cannot examine the demodulation capability of the system under extreme conditions such as small signal incident angles;

[0014] (3) The wireless link is configured by the base station controller, and the wireless link parameters configured by different base station controllers lack strict consistency;

[0015] (4) The evaluation of demodulation performance depends on accurate BLER statistics. At present, BLER statistics are completed by the base station to be tested. Due to the complexity of BLER statistics, it is difficult for current test methods to guarantee the reliability of BLER statistics.

At present, there is no operable laboratory test method for the accuracy test of AOA. The evaluation of AOA accuracy depends on the test of the actual environment in the field. Because the outdoor environment is more complicated, it is difficult to guarantee the test accuracy, and it is also difficult to guarantee the accuracy of different time and place. consistency of testing

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