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Since digital technology is Communicate Since the advent of wireless communication technology of the most important development of the next. Many new wireless communication standard MIMO options are included, but so far, the most prominent standard on an American Institute of Electrical and Electronics Engineers (IEEE) for 802.11n wireless local area network (WLAN) standard,. Although this standard is still in draft form, but can be purchased on the market already has the advantages of Pre-802.11nWLAN MIMO devices. Parties to comment on the results of this equipment, MIMO technology is feasible, the use of this technology, no additional bandwidth or power output, you can substantially increase the data rate of WLAN equipment and scope. MO is no reason not to enjoy the benefits without paying the price. To have the MIMO capacity, we must use both ends of the communication link multiple transmitter and receiver, in addition to increased costs for product and bring additional complexity, would also be the final process of production and testing costs, great impact. In addition, the system can be improved in order to get MIMO performance benefits of the transmitter and the receiver's own performance must also be substantially better than our current orthogonal frequency division multiplexing (OFDM) WLAN standards (such as 802.11g) expectations. With the new performance requirements from that used in production test systems must overcome new challenges in order to ensure that products meet quality and performance requirements of the target. The most noteworthy point is the possibility of the transmitter and the receiver into the number of double, triple, even quadruple, and the specifications more stringent circumstances, still control the cost of testing 802.11a / g system standard? Production test Methods AN manufacturers can choose to use MIMO test Test Equipment Types and suppliers, in order to avoid increasing the test time, it is necessary to choose carefully to maintain the quality while limiting the costs of testing. In the past for the selection of traditional test equipment used to follow the argument still applies to MIMO (reference 2,3), however, in addition to maintaining an acceptable test of time outside, it is necessary to test the device under test (DUT) is a high enough the MIMO performance. Test methods usually have four options: traditional method - the gold sample (GoldenRadio, GR), the spectrum Analyzer Increase power? GR plus support for single channel stand-alone Tester (OneBoxTester, OBT) Support single channel of the OBT Support multi-channel or multi-department OBT OBT Years, WLAN production to try to use traditional testing methods, the reason why the early years in vicious name Um site will look delicate and pepper ù leech? Command fierce Mei? LAN test instrument. This method has some drawbacks, including the transmitter (TX) of the test coverage is poor, and the support of GR limited. Neither a simple way to verify the quality of TX, but also because using a special test mode, the GR method are applicable only to the test device type match. We are high quality suppliers, our products such as solar powered led lamp Manufacturer , solar powered globe for oversee buyer. To know more, please visits Solar Table Lamp.
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