Optimizing and Testing WLANs phần 10 pptx

... 9 10 Diversity test 102 104 Drift 85–86 DUT coupling Chambered test 68 Conducted test setup 70 MIMO test 232–233 DUT response 105 External signal injection point 105 106 Host test software 107 Internal ... devices, which includes WLANs operating in the 5.15, 5.25, and 5.725 GHz bands. Section 15.407(a) sets the operating power limits for these bands. • Subpart F covers ultra-w...

Ngày tải lên: 14/08/2014, 14:20

... 206Ch08-H7986.indd 206 6/28/07 10: 20 :10 AM6/28/07 10: 20 :10 AM Chapter 8 200 “what-if” scenarios and arrive at an optimal placement. Obviously, this is a much simpler and less labor-intensive process ... analyzers, handheld PDA-based signal monitors, Ch08-H7986.indd 203Ch08-H7986.indd 203 6/28/07 10: 20 :10 AM6/28/07 10: 20 :10 AM Installation Test 205 sensors makes them more...

Ngày tải lên: 14/08/2014, 14:20

... Protocol Testing 109 5.1 An Introduction to Protocol Testing 109 5.2 Conformance and Functional Testing 111 5.3 Interoperability Testing 117 5.4 Performance Testing 121 5.5 Standardized Benchmark Testing ... amplified and transmitted. Ch01-H7986.indd 6Ch01-H7986.indd 6 6/28/07 12:49:00 PM6/28/07 12:49:00 PM Optimizing and Testing WLANs Proven Techniques for Maximum...

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... Lifecycle Chip Design And Verif- ication Chip Fabri- cation Chip Valid- ation Testing Chip Manuf- acturing Testing Device Prequal- ification Testing System Design Integ- ration Testing QA Testing Environ- mental And Regula- tory Testing Equip- ment Produc- tion Eval- uation Testing Equip- ment Install- ation Mainte- nance Site Survey Test Post- Install Testing Testing ......

Ngày tải lên: 14/08/2014, 14:20

... QA testing usually follows a formal test plan and can take months to complete. Many of the test setups and test procedures covered in this book (apart from manufacturing and installation testing) ... Protocol-Level Testing Once the RF characterization is complete, it becomes necessary to do the same for the digital and software subsystem. This type of testing is usually done u...

Ngày tải lên: 14/08/2014, 14:20

... test software Attenuator 0123 0 10% 90% 100 % Transmit power Time Compliance mask 10 dB / div 1 uSec/div Ϫ30 dBm 10 uSec VSA measurement Ch04-H7986.indd 87Ch04-H7986.indd 87 6/28/07 10: 00:57 AM6/28/07 10: 00:57 AM WLAN ... cation, down-conversion and fi ltering, and baseband digital signal processing. Sensitivity and dynamic range are obvious candidates; others include reject...

Ngày tải lên: 14/08/2014, 14:20

... packets, and the differential attenuators Ch04-H7986.indd 103 Ch04-H7986.indd 103 6/28/07 10: 01:01 AM6/28/07 10: 01:01 AM Chapter 4 98 measurements should be 100 kHz, and the video bandwidth should ... performing protocol testing. However, the difference is important to understand. CHAPTER 5 Ch05-H7986.indd 109 Ch05-H7986.indd 109 6/28/07 10: 16:19 AM6/28/07 10: 16:19 AM Chap...

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... 6/28/07 10: 16:25 AM6/28/07 10: 16:25 AM Protocol Testing 131 QoS adds another dimension to performance testing of WLANs. In addition to standard performance tests such as throughput and latency, ... complexity of the product and the level of quality required. 5.3 Interoperability Testing Interoperability testing is diametrically opposed to both functional and performance...

Ngày tải lên: 14/08/2014, 14:20

... the more advanced MPEG-4 standard is also coming into use. Format Typical Bandwidth Remarks MPEG-2 3 10 Mb/s Can be as low as 100 kb/s and as high as 300 Mb/s DVD 10 Mb/s Most commonly uses MPEG-2 ... networks over WLANs is highly dependent on QoS and bandwidth effi ciency; thus adequate testing is key, primarily of the installed infrastructure but sometimes also of the devices a...

Ngày tải lên: 14/08/2014, 14:20

... transmitter and determine the various gain and I/Q balance constants Align the receiver and determine the RSSI and AGC constants Determine LNA and diversity switching constants Calculate and program ... the chipset and therefore the system is non-functional. 7.5 Functional and System Testing Functional and system tests are performed after the WLAN device has been fully a...

Ngày tải lên: 14/08/2014, 14:20