Optimizing and Testing WLANs phần 4 pdf

... 6 BPSK 2 Ϫ5 56.2 9 BPSK 2 Ϫ8 39.8 12 QPSK 4 Ϫ10 31.6 18 QPSK 4 Ϫ13 22.3 24 16-QAM 16 Ϫ16 15.8 36 16-QAM 16 Ϫ19 11.2 48 64- QAM 64 Ϫ22 7.9 54 64- QAM 64 Ϫ25 5.6 In practice, measuring EVM on 802.11 ... cation, down-conversion and fi ltering, and baseband digital signal processing. Sensitivity and dynamic range are obvious candidates; others include rejection of co-channel...

Ngày tải lên: 14/08/2014, 14:20

... Alliance 243 A .4 CTIA 243 A.5 IETF BMWG 244 Appendix B: Selected Bibliography 245 Index 249 Contents vii Prelims-H7986.indd viiPrelims-H7986.indd vii 6/29/07 6:31: 54 PM6/29/07 6:31: 54 PM Chapter ... 6/28/07 12 :49 :02 PM6/28/07 12 :49 :02 PM Chapter 5: Protocol Testing 109 5.1 An Introduction to Protocol Testing 109 5.2 Conformance and Functional Testing 111 5.3 Interopera...

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... the modulation functions are normally 2 .40 0 2 .41 2 2 .48 352 .47 1 2 .49 7 4. 900 4. 940 4. 990 5.091 5.150 5.250 5.350 5 .47 0 5.725 5.825 USA Europe Japan 1000mW 40 mW 200mW 800mW 100 mW 100mW 200mW 1000 mW 50mW 250mW ... Lifecycle Chip Design And Verif- ication Chip Fabri- cation Chip Valid- ation Testing Chip Manuf- acturing Testing Device Prequal- ification Testing System...

Ngày tải lên: 14/08/2014, 14:20

... Ch02-H7986.indd 49 Ch02-H7986.indd 49 6/28/07 12 :49 : 54 PM6/28/07 12 :49 : 54 PM Chapter 2 42 VSAs are capable of a vast number of very useful measurements, and are indispensable in WLAN system RF test and alignment. 2.5 .4 ... corp. Ch02-H7986.indd 48 Ch02-H7986.indd 48 6/28/07 12 :49 :53 PM6/28/07 12 :49 :53 PM Chapter 2 44 In the above setup, a three-axis positioner is u...

Ngày tải lên: 14/08/2014, 14:20

... channel 6 in the 2 .4 GHz band (i.e., 243 7 MHz center frequency), then the interfering VSG would be tuned to either channel 4 ( 242 7 MHz center frequency) or channel 8 ( 244 7 MHz center frequency). ... chamber Test packet capture interface Figure 4. 7: TIS Measurement Ch 04- H7986.indd 94Ch 04- H7986.indd 94 6/28/07 10:00:59 AM6/28/07 10:00:59 AM Protocol Testing 115 2. receiver s...

Ngày tải lên: 14/08/2014, 14:20

... 6.2: The Consumer WLAN Utopia Ch06-H7986.indd 140 Ch06-H7986.indd 140 6/28/07 1: 14: 44 PM6/28/07 1: 14: 44 PM Application-Level Measurements 141 Traffi c and test procedures that quantify the end-user ... covered. Ch06-H7986.indd 141 Ch06-H7986.indd 141 6/28/07 1: 14: 45 PM6/28/07 1: 14: 45 PM Protocol Testing 117 Secondly, there are four distinct encryption modes (none, WEP, TKIP,...

Ngày tải lên: 14/08/2014, 14:20

... AP * 123 45 6 789 * 0# * 123 45 6 789 * 0# * 123 45 6 789 * 0# * 123 45 6 789 * 0# * 123 45 6 789 * 0# * 123 45 6 789 * 0# * 123 45 6 789 * 0# * 123 45 6 789 * 0# * 123 45 6 789 * 0# * 123 45 6 789 * 0# * 123 45 6 789 * 0# * 123 45 6 789 * 0# Ch06-H7986.indd ... Handsets * 123 45 6 789 * 0# * 123 45 6 789 * 0# * 123 45 6 789 * 0# * 123 45 6 789 * 0# * 123 45 6 789 * 0# * 123...

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

... transmit and receive antennas used, as these directly indicate the channel capacity improvement that can be obtained. Thus a 4 ϫ 4 MIMO system has 4 transmit and 4 receive antennas, and can ... over- view to understand how MIMO works and its effects on both WLAN equipment and test procedures. CHAPTER 9 Ch09-H7986.indd 207Ch09-H7986.indd 207 6/28/07 11: 24: 03 AM6/28/07 11:...

Ngày tải lên: 14/08/2014, 14:20

... 6/28/07 11: 24: 14 AM6/28/07 11: 24: 14 AM 241 A Standards Guide APPENDIX A This Appendix provides a general guide to the regulatory and standards documents that govern WLAN equipment design and testing. A.1 ... 137 End-to-end test 145 Link segment test 145 – 146 Measurement setup 142 – 144 Relevance 162–163 Repeatability 162–163 System-level measurement 137– 146 Traffi c mix...

Ngày tải lên: 14/08/2014, 14:20