Optimizing and Testing WLANs phần 6 docx

... Generator and Analyzer (TGA) Traffic Generator and Analyzer (TGA) Routers AP AP AP AP AP AP AP AP AP AP AP AP AP AP AP Ch05-H79 86. indd 128Ch05-H79 86. indd 128 6/ 28/07 10: 16: 26 AM6/28/07 10: 16: 26 AM Chapter ... switch to accept back-to-back bursts of frames and buffer them up Ch05-H79 86. indd 126Ch05-H79 86. indd 1 26 6/28/07 10: 16: 25 AM6/28/07 10: 16: 25 AM Protocol Tes...

Ngày tải lên: 14/08/2014, 14:20

... chip Packet Buffer Memory Flash Memory Client Session Manager Control Manager HTTP SNMP CLI/Telnet Security QoS Association TCP/IP Stack Packet DMA RTOS and Drivers Ch01-H79 86. indd 16Ch01-H79 86. indd 16 6/28/07 12:49:04 PM6/28/07 12:49:04 PM Metrology, Test Instruments, and Processes 35 actual behavior of the devices and systems with ... Lifecycle Chip Design And Verif- ication C...

Ngày tải lên: 14/08/2014, 14:20

... written to run a test at each individual frame size and record the results. Ch05-H79 86. indd 116Ch05-H79 86. indd 1 16 6/28/07 10: 16: 22 AM6/28/07 10: 16: 22 AM Chapter 4 108 If frame traffi c is sent to ... when performing protocol testing. However, the difference is important to understand. CHAPTER 5 Ch05-H79 86. indd 109Ch05-H79 86. indd 109 6/ 28/07 10: 16: 19 AM6/28/07 10: 16: 19...

Ngày tải lên: 14/08/2014, 14:20

... amplified and transmitted. Ch01-H79 86. indd 6Ch01-H79 86. indd 6 6/28/07 12:49:00 PM6/28/07 12:49:00 PM Optimizing and Testing WLANs Proven Techniques for Maximum Performance By Tom Alexander AMSTERDAM ... Header Tail (6 bits) Pad Trailer Rate (4 bits) Rsvd (1 bit) Length (12 bits) Parity (1 bit) Tail (6 bits) Ch01-H79 86. indd 8Ch01-H79 86. indd 8 6/ 28/07 12:49:01 PM6/28/0...

Ngày tải lên: 14/08/2014, 14:20

... change to a destructive combination, and vice versa. Ch03-H79 86. indd 62 Ch03-H79 86. indd 62 6/ 28/07 9:55:50 AM6/28/07 9:55:50 AM WLAN Test Environments 61 a “standard” or “common” indoor environment. ... Standing Waves Figure 3 .6: Chambered Test Setups Ch03-H79 86. indd 64 Ch03-H79 86. indd 64 6/ 28/07 9:55:51 AM6/28/07 9:55:51 AM This page intentionally left blank Metrology...

Ngày tải lên: 14/08/2014, 14:20

... (dB) EVM (%RMS) 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 Ϫ 16 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, ... Section 4 .6) , then care should be taken to avoid measuring the envelope of the external device instead of the DUT Ch04-H79 86. indd 86Ch04-H79 86. indd 86 6/28/07 10:00: 56 AM...

Ngày tải lên: 14/08/2014, 14:20

... Traffic Sink Link-segment Testing Ch 06- H79 86. indd 146Ch 06- H79 86. indd 1 46 6/28/07 1:14: 46 PM6/28/07 1:14: 46 PM Chapter 6 148 802.11 MAC frame) would require only 166 ␮s to transmit at an 11 Mb/s ... Trunk Ethernet Switch 123 4 56 789 * 0# 123 4 56 789 * 0# 123 4 56 789 * 0# 123 4 56 789 * 0# 123 4 56 789 * 0# 123 4 56 789 * 0# Figure 6. 7: VoIP Over WLAN Architecture...

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... internal fi lter passbands, amplifi er gains and comparator thresholds to obtain the desired RF Ch07-H79 86. indd 169 Ch07-H79 86. indd 169 6/ 28/07 10:19: 16 AM6/28/07 10:19: 16 AM Chapter 7 1 76 datasheet specifi ... EEPROM Ch07-H79 86. indd 176Ch07-H79 86. indd 1 76 6/28/07 10:19:18 AM6/28/07 10:19:18 AM 181 Installation Test A considerable amount of testing is performed during the...

Ngày tải lên: 14/08/2014, 14:20

... understand how MIMO works and its effects on both WLAN equipment and test procedures. CHAPTER 9 Ch09-H79 86. indd 207Ch09-H79 86. indd 207 6/ 28/07 11:24:03 AM6/28/07 11:24:03 AM Chapter 8 2 06 power ... Management Console Ch08-H79 86. indd 206Ch08-H79 86. indd 2 06 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. Obviousl...

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... 20 Transmitter 21 Outdoor 56 Antenna range 60 OTA 59 60 Output power 78 Over-the-air (OTA) 56, 58, 61 , 73, 95 Chambered 64 69 Fresnel zone 61 62 Indoor 60 61 Outdoor 59 60 P Packet traffi c 107–108 Path ... 125 Fraunhofer distance 66 67 Frequency band 20 Frequency-hopping spread- spectrum (FHSS) 6 Frequency stability 84– 86 Frequency synthesizer 85, 174 Fresnel zone 61 62...

Ngày tải lên: 14/08/2014, 14:20