testing debugging optimizing and documenting

... Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Optimizing and Testing WLANs Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com ... left blank Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Optimizing and Testing WLANs Proven Techniques for Maximum Performance By Tom Alexander AMSTERDAM • BOSTON • ... measurement, the equipment used, and some understanding of the techniques and complexities of each area Even design and development engineers, who usually not run into performance testing on a daily basis,...

Ngày tải lên: 27/06/2014, 00:20

... Optimizing and Testing WLANs This page intentionally left blank Optimizing and Testing WLANs Proven Techniques for Maximum Performance By Tom Alexander AMSTERDAM • BOSTON ... 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 ... measurement, the equipment used, and some understanding of the techniques and complexities of each area Even design and development engineers, who usually not run into performance testing on a daily basis,...

Ngày tải lên: 14/08/2014, 14:20

... Chapter Chip Design And Verification Chip Fabrication Chip Validation Testing Chip Manufacturing Testing QA Testing Device Prequalification Testing Environmental And Regulatory Testing System Design ... the RF and IF functions (up/down conversion, amplification, frequency synthesis and automatic gain control or AGC), the baseband functions (modulation and demodulation, and digitization), and the ... the 2.4 and 5.8 GHz frequency bands Thus they contain two completely independent RF/IF chains, basebands, and MAC processing elements Client NICs can rely on the presence of a host CPU and OS,...

Ngày tải lên: 14/08/2014, 14:20

... circuit has been characterized and is working properly, the next step is usually to send test data through the transmit paths and ensure that the transmitter (baseband and RF/IF) is functioning correctly ... Protocol-Level Testing Once the RF characterization is complete, it becomes necessary to the same for the digital and software subsystem This type of testing is usually done using a clean and well-controlled ... the lot code and the MAC address of the device, and presses a button; the test system then takes over, calibrates the radio, runs a small battery of RF and protocol tests on the DUT, and finally...

Ngày tải lên: 14/08/2014, 14:20

... amplification, down-conversion and filtering, and baseband digital signal processing Sensitivity and dynamic range are obvious candidates; others include rejection of co-channel and adjacent channel interfering ... Ethernet and Power Connectors Power Supply Figure 3.9: Typical Cabled Test Set up 69 Chapter If the DUT’s antennas are connectorized and thus removable, and its case or enclosure is all-metal (and ... functional tests done during design and development of wireless LAN (WLAN) equipment and chips; • performance tests, which try to quantify how well the RF and baseband portions of the equipment works;...

Ngày tải lên: 14/08/2014, 14:20

... transmitter peak output power to no more than W in the 2.4 and 5.8 GHz bands The 5.15 and 5.25 GHz bands have lower limitations on transmitter power (50 and 250 mW, respectively) For WLAN devices operating ... by IEEE 802.11 generate very wideband signals between 16 and 20 MHz in terms of Ϫ3 dB bandwidth To ensure that they minimize or limit cross-channel and out-of-band interference, IEEE 802.11 transmitters ... quite small and difficult to probe, and the probes used are delicate and expensive (and have to be used under a microscope) For these reasons, RF design engineers spend a great deal of time and money...

Ngày tải lên: 14/08/2014, 14:20

... buffer capacity QoS capacity 5.5 Standardized Benchmark Testing There is probably no area of protocol testing that rouses as much interest – and controversy! – as standardized benchmark measurements ... Test Software Traffic Generator and Analyzer (TGA) Traffic Generator and Analyzer (TGA) Traffic Generator and Analyzer (TGA) Figure 5.5: Large-Scale Performance Testing network stress Obviously, ... 802.11e standard far exceeds what is typically required for simple VoIP applications.) 130 Protocol Testing QoS adds another dimension to performance testing of WLANs In addition to standard performance...

Ngày tải lên: 14/08/2014, 14:20

... finished and packaged products off the inventory shelves at random and perform more extensive testing Such random sampling helps to identify manufacturing issues and deficiencies in the production testing ... real handsets as sources and sinks of traffic In such a scenario, the entire infrastructure to be tested is set up (and acts as a SUT, as denoted by the dotted lines), and then some number of handsets ... thereof) and then either captured and stored, or analyzed in real-time The video quality is obtained from the analysis and reported 6.5 Relevance and Repeatability The benefits of application-level testing...

Ngày tải lên: 14/08/2014, 14:20

... vendors and manufacturers; this is standardized as LXI (LAN Extensions for Instrumentation), and allows bulky GPIB cables and unwieldy serial console multiplexers to be replaced by a simple and high-speed ... 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 calibration ... loaded, 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 aligned and programmed,...

Ngày tải lên: 14/08/2014, 14:20

... area, and connected to the wired infrastructure; these devices are independent of the APs and WLAN controllers, and are installed and operated as a separate subsystem The sensors can pick up and ... because the operating frequency ranges and channel bandwidths in the WLAN bands are defined by regulatory bodies and would hence be more-or-less the same as for standard 802.11a/g PHYs, but 5–10 times ... experimentation and data gathering While the models were originally intended for simulation, design, and testing of competing 802.11n PHY proposals, the channel models are also very useful for the testing and...

Ngày tải lên: 14/08/2014, 14:20

... necessary 240 APPENDIX A A Standards Guide This Appendix provides a general guide to the regulatory and standards documents that govern WLAN equipment design and testing A.1 FCC Part 15 The Federal ... the GHz band including the spectral masks and operating channels 242 A Standards Guide The upcoming IEEE 802.11n amendment, currently in revision and still being balloted by the IEEE standards ... little noise and distortion is introduced into the system • It is directly mappable to time-domain channel models, which simplifies construction and understanding For example, a standard power...

Ngày tải lên: 14/08/2014, 14:20

... Functional testing falls into four broad categories: exploratory testing, acceptance testing, integration testing, and performance testing Exploratory testing looks for new bugs It’s an inventive and ... stress testing and load testing The goal of performance testing is not to find bugs, but to find and eliminate bottlenecks It also establishes a baseline for future regression testing Load testing ... blocks larger than a single unit The tools and techniques borrow heavily from both unit testing and acceptance testing, and many tests in both acceptance and unit test suites can often be characterized...

Ngày tải lên: 05/10/2013, 09:20

... testing • Usability testing • Regression testing • Stability testing • Load testing • Authorization testing • Performance testing • Stress testing • Customer acceptance testing • Deployment testing ... and focus on extending and improving the usage of random testing and partition testing While Chapter focuses on investigating the combinations of different testing techniques, i.e partition and ... 8.5 8.6 8.4.3 Random example I—test data and fixture generation and selection126 8.4.4 Random example II—result collection 127 8.4.5 Random example III—result evaluation and test analyzer...

Ngày tải lên: 20/12/2013, 19:15

... interested in it Chapter Aspects of debugging C and C++ code Debugging C and C++ code entails noticing, localising, understanding and repairing bugs Noticing and localising a bug You might think ... Explicit storage allocation and deallocation In C and C++, you have to explicitly allocate and deallocate dynamic storage through malloc and free (for C) and through new and delete (for C++) If memory ... Debugging C and C++ code in a Unix environment by J.H.M Dassen and I.G Sprinkhuizen-Kuyper Copyright © 1998-1999 by J.H.M Dassen (Ray) and I.G Sprinkhuizen-Kuyper Copyright and Permission...

Ngày tải lên: 21/01/2014, 06:20

... fluids and coagulating glands), levator ani-bulbocavernosus muscle, 363 paired Cowper's glands and the glans penis 364 In order to establish whether a test substance can have androgenic or antiandrogenic ... concerning the effects of a substance on the 204 integrity and performance of the male and female reproductive systems, and on the growth 205 and development of the offspring, including gonadal function, ... parturition, lactation, and weaning, and the growth and 207 development of the offspring The study may also provide information about the effects on 208 neonatal morbidity, mortality, and preliminary...

Ngày tải lên: 05/03/2014, 16:20

... understand and comprehend the strengths and limitations of various techniques and providing access to additional literature An overview and synthesis of the current status of techniques and strategies ... communication, and risk perception • Use of information from biological testing in decision- and policymaking • Selected and simple proven techniques that may be used for testing and training purposes ... effects of sampling, storage, handling and toxicity testing R.S Carr and M Nipper eds Summary of a SETAC technical workshop: Porewater Toxicity Testing: Biological, Chemical and Ecological Considerations...

Ngày tải lên: 06/03/2014, 18:21

... Glossary Terminology of and abbreviations radiography Joint Standards Australia / Standards New Zealand Testing of Metals and Materials, to supersede, in of metal welding terms and definitions, Part ... since the Standard was purchased Detailed information about Standards can be found by visiting the Standards Australia web site at www.standards.com.au and looking up the relevant Standard in the ... www.standards.com.au © Standards Australia Standards Australia Standards Australia is an independent company, limited by guarantee, which prepares and publishes most of the voluntary technical and...

Ngày tải lên: 12/03/2014, 18:03

... CD and DVD A companion CD and an evaluation software DVD are included with this training kit The companion CD contains the following: You can reinforce your understanding of how to optimize and ... your command of current Microsoft products and technologies The exams and corresponding certifications are developed to validate your mastery of critical competencies as you design and develop, ... Performance 17 Network Structure and Bandwidth Network structures in a production environment are often complex, involving the use of routers and switches to implement subnets and virtual local area networks...

Ngày tải lên: 28/03/2014, 19:20

... support and virtualization experience and has a deep technical hands-on experience with Hyper-V and SCVMM since Windows 2008 He is a Subject Matter Expert in the WW Microsoft Virtualization team and ... for it She enables bandwidth management and caps the bandwidth at a maximum of 200 MB/sec: Instead of capping the network bandwidth, Patricia could have configured a minimum bandwidth for each ... have at least a basic understanding of Windows PowerShell and familiarity with tools and utilities for managing Windows servers, Hyper-V hosts, virtual machines, and the various components of...

Ngày tải lên: 16/04/2014, 17:37

... that…or worse! Optimizing and Troubleshooting Hyper-V Storage is all about watching the experts as they configure, maintain, and troubleshoot different aspects of storage for Hyper-V hosts and the virtual ... running on these hosts And when I use the word "expert" here, I really mean it, because the contributors to this book all work at Microsoft and have first-hand knowledge and experience with the ... have at least a basic understanding of Windows PowerShell and familiarity with tools and utilities for managing Windows servers, Hyper-V hosts, virtual machines, and the various components of...

Ngày tải lên: 24/04/2014, 15:42