Optimizing and Testing WLANs phần 5 docx

... 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 under Part 15 rules, the FCC ... signal of 631 ␮V for frequencies between 0. 15 and 5 MHz, and 1000 ␮V between 5 and 30 MHz, measured using a ‘quasi-peak’ method. Further, FCC Part 15. 207(a) specifi es th...

Ngày tải lên: 14/08/2014, 14:20

... normally 2.400 2.412 2.48 352 .471 2.497 4.900 4.940 4.990 5. 091 5. 150 5. 250 5. 350 5. 470 5. 7 25 5.8 25 USA Europe Japan 1000mW 40mW 200mW 800mW 100 mW 100mW 200mW 1000 mW 50 mW 250 mW 200mW GHz Figure ... required to produce 50 mW or more of power output in the 2.400–2.483 GHz and possibly also the 5. 150 5. 8 25 GHz frequency bands. The following fi gure shows the gene...

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... Ch 05- H7986.indd 125Ch 05- H7986.indd 1 25 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 ... situations before it is forced to drop one. Ch 05- H7986.indd 124Ch 05- H7986.indd 124 6/28/07 10:16: 25 AM6/28/07 10:16: 25 AM Protocol Testing 1 25 5.4.4 Rate-based Metr...

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... PM Chapter 5: 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 ... 6/29/07 6:31 :55 PM6/29/07 6:31 :55 PM Chapter 1 8 The 802.11a PLCP frame is different from the 802.11b frame, and is shown below. The 802.11a PHY operates in the 5....

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... 3 Ch03-H7986.indd 55 Ch03-H7986.indd 55 6/28/07 9 :55 :48 AM6/28/07 9 :55 :48 AM Chapter 3 58 be properly constructed to eliminate leakage. Further, a door is necessary for the operator to go in and out, and to ... to 150 0 V, and Ch02-H7986.indd 52 Ch02-H7986.indd 52 6/28/07 12:49 :55 PM6/28/07 12:49 :55 PM WLAN Test Environments 63 Dealing with the spatial and temporal vari...

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... stored energy of the antenna’s electric and magnetic fi elds, and the wave propagation Ch03-H7986.indd 65Ch03-H7986.indd 65 6/28/07 9 :55 :51 AM6/28/07 9 :55 :51 AM Physical Layer Measurements 83 Note ... 67Ch03-H7986.indd 67 6/28/07 9 :55 :52 AM6/28/07 9 :55 :52 AM Chapter 4 90 4.3 Receiver Tests Various receiver performance and functional tests are also performed during general desi...

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... AP * 123 456 789 * 0# * 123 456 789 * 0# * 123 456 789 * 0# * 123 456 789 * 0# * 123 456 789 * 0# * 123 456 789 * 0# * 123 456 789 * 0# * 123 456 789 * 0# * 123 456 789 * 0# * 123 456 789 * 0# * 123 456 789 * 0# * 123 456 789 * 0# Ch06-H7986.indd ... Handsets * 123 456 789 * 0# * 123 456 789 * 0# * 123 456 789 * 0# * 123 456 789 * 0# * 123 456 789 * 0# * 123...

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... 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, ... 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 constan...

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... special needs and approaches for testing MIMO devices and systems. Note that as much of this technology is just being developed, and the whole area of MIMO in wireless LANs (WLANs) is still ... 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 c...

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... devices, which includes WLANs operating in the 5. 15, 5. 25, and 5. 7 25 GHz bands. Section 15. 407(a) sets the operating power limits for these bands. • Subpart F covers ultra-wideband (UWB) devices, ... and Internet Association (CTIA) 243–244 Chambered 56 , 58 59 Advantages 59 Anechoic 65 Disadvantages 59 DUT coupling 68 Radiating far fi eld 65 Radiating near fi eld 65...

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