Method and device for detecting diversity reception performance
A technology of diversity reception and performance, applied in the direction of preventing/detecting errors through diversity reception, diversity/multi-antenna system, reducing energy consumption, etc., can solve the problems of inability to support switching, power control and other detection, inability, inconvenience, etc., to achieve The Effect of Shortcut Diversity Reception Performance
Active Publication Date: 2008-05-21
ZTE CORP
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Problems solved by technology
When there are many fading multipaths, the randomness of channel fading decreases, which is reflected in the rapid repetition of simulation results
These two baseband fading simulators cannot be interfaced with commercial terminals / test terminals / standard signal sources when doing fading simulation, so they are not suitable for system-level testing
This type of baseband fading simulation is only used for bit error rate testing under fading conditions, and cannot support handover and power control tests required in 3G systems under fading conditions. At the same time, the price of baseband fading simulators is also relatively expensive.
[0005] In summary, the existing fading simulators obviously have inconvenience and defects in actual use, so it is necessary to improve
Method used
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Embodiment 1
[0073] The diversity gains obtained in the embodiment and the second embodiment are different. When the two sets of values are closer, it can be judged that the greater the non-correlation between the main antenna and the auxiliary antenna of the communication device under test 30 is, the more favorable it is to resist multipath fading.
[0074] Take an actual WCDMA850MHz mobile terminal with HSDPA technology as an example to introduce the implementation plan below. refer to figure 1 In the connection test environment with antenna, according to the requirements of testing CQI under the 3GPP standard AWGN, set the channel of the comprehensive tester to select the downlink 4407; the attenuation frequency to select 881.4MHz.
[0075] The comprehensive tester establishes a loop link through space coupling calls to non-diversity tested terminals. Test the CQI value of the non-diversity tested terminal at this time.
[0076] The comprehensive tester establishes a loop link thro...
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The invention discloses a detection method for the diversity reception, comprising: a first emission power signal of the signal source is at least divided into two paths; the signal simulating frequency of the first path is transmitted to the non-diversity communication equipment after selective fading; the signal simulating of the second path is directly transmitted to the non-diversity communication equipment without fading, and the signal receiving magnitude of the non-diversity communication equipment is detected; the second emission power signal of the signal source is at least divided into two paths; the signal simulating frequency of the first path is transmitted to the diversity communication equipment after selective fading; the signal simulating of the second path is directly transmitted to the diversity communication equipment without fading, and the signal receiving magnitudes of the diversity communication equipment and the non-diversity communication equipment are the same; the power difference value of the first emission power and the second emission power of the signal source is calculated to get the diversity gain. The invention also discloses a detection device for the diversity reception. The invention has the advantages of not only detecting the diversity reception rapidly and conveniently, but also having low cost, being energy-saving and environment-friendly.
Description
technical field [0001] The present invention relates to the field of wireless communication, in particular to a method and device for detecting diversity reception performance of communication equipment. Background technique [0002] At present, with the rapid development of mobile communication, the amount of information communicated by users is increasing, and the signal rate is continuously increasing. WCDMA (Wideband Code Division Multiple Access, Wideband Code Division Multiple Access) was conceived from this. Since WCDMA adopts HSDPA (High Speed Downlink Package Access, High Speed Downlink Packet Access) technology, the downlink data rate can reach 10Mb / S. At the same time, users' requirements for communication transmission quality are also increasing day by day. How to ensure signal reception quality and communication reliability has become one of the research breakthrough directions in this field. In actual wireless communication, when useful signals are transmi...
Claims
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IPC IPC(8): H04L1/00H04L1/02H04B7/02
CPCY02D30/70
Inventor 刘卫刚安飞郭绪斌卢忱李成恩杨明
Owner ZTE CORP