fortran1 lecture, lesson
Lecture 2 - RF Fundamentals
... this lecture you will be able to: February 20 05 Copyright 20 05 All Rights Reserved 24 2. 4 Gz 10 dBi Omni-Directional Antenna Radio Frequency Fundamentals (1 September 20 06) February 20 05 Copyright ... refracted or bent. RF Behavior Contd February 20 05 Copyright 20 05 All Rights Reserved 32 End of Lecture February 20 05 Copyright 20 05 All Rights Reserved 15 ● Dif...
Ngày tải lên: 13/09/2012, 11:16
Lecture 4 - Spread Spectrum Technologies
... Milliseconds (ms) 200 40 0 600 800 1000 1200 140 0 1600 2 .40 1 2 .47 9 Transmission Frequency (GHz) Divided into 79 1 MHz Channels Frequency Hopping Spread Spectrum An Example of a Co-located Frequency ... 52 sub-channels with each sub-channel 300 KHz each. ☛ 48 Sub-channels are used to transmit data ☛ 4 sub-channels are used as Pilot carriers to monitor the channel 8 Channels 5...
Ngày tải lên: 13/09/2012, 11:16
Lecture 5 - WLAN Infrastruc
... maps http://www.cisco.com/warp/public/102 /wlan/ faq-hardware-us-calc.html February 20 05 Copyright 20 05 All Rights Reserved 28 PCMCIA Cards and Converters PCMCIA Card PCI Adapter Wireless Compact Flash February 20 05 Copyright 20 05 ... 20 05 Copyright 20 05 All Rights Reserved 26 Wireless Client Devices February 20 05 Copyright 20 05 All Rights Reserved 18 Wireless Bridge Feb...
Ngày tải lên: 13/09/2012, 11:16
Lecture 6 WLAN Standards and Organizations.ppt
... in the 5.0 GHz UNNI bands. ✔ 200 channels ( channels 1-199) spaced 5 MHz apart. ✔ Supported data rates are 6, 9, 12, 18, 24, 36, 48 and 54 MBps. ✔ 6, 12, and 24 are mandatory. All others ... Standard. ✔ The 802.11 is the base standard (ratified July 1997, updated in 1999 and reaffirmed in 2003). ✔ All other 802.11 standards simply amend the base standard and are identified...
Ngày tải lên: 13/09/2012, 11:16
Lecture 7 - 802.11 WLAN Architecture
... computers. Major WLAN Components February 2005 Copyright 2005 All Righs Reserved 3 802.11 WLAN Topology and Architecture February 2005 Copyright 2005 All Righs Reserved 17 Active Scanning ● ... Param Set IBSS Param Set ✔ Timestamp - Synchronization between stations. ✔ Beacon Interval - Announce existence of 802.11 network. ✔ Capability Info - Advertiseme...
Ngày tải lên: 13/09/2012, 11:16
Lecture from ingapore
... 11009970true “Không điều gì chắc chắn ngoài sự thay đổi” - Heraclitus 11009970true www.singaporeair.com www.ghanaair.com www.lufthansa.com www.ual.com www.vietnamairlines.com SIA Đa ... Thấp Thế mạnh kinh doanh Tiến lên Tiến lên Tiến lên Ngưng Ngưng Ngưng 11009970true Thế mạnh của Singapore là gì? Những thị trường hấp dẫn là gì? Khách hàng và giá trị khách hàng: Anh chị đánh
Ngày tải lên: 26/10/2012, 09:12
Lecture 2 ArithCode
... 1/10=0.1 [0.4, 0.5) I 2 2/10=0 .2 [0 .2, 0.4) M 1 1/10=0.1 [0.1, 0 .2) _ 1 1/10=0.1 [0.0, 0.1) Example 1: Encoding S 0.5 [0.5, 1.0) W 0.1 [0.4, 0.5) I 0 .2 [0 .2, 0.4) M 0.1 [0.1, 0 .2) __ 0.1 [0.0, ... (0.10110111101100000101) 2 20 bits 0.71753375 < 0.71753407… < 0.71753500 b) Codelength m: m=-log 2 (r) = -log 2 (0.0000 125 ) = 19.6 =20 bits c) Bitrate:...
Ngày tải lên: 26/10/2012, 11:57
Lecture 3 Block
... c H =’111111’ Entropy H 3 ? Bitrate: R 3 = (1*p A +2*p B +3* p C +4*p D +6*(p E +p F +p G +p H )) /3= = 0 .35 3 bits/pel Exercise Thực hiện mã khối với n=2; p a =56/64 p b =8/64 Block coding: n=2 New ... alphabet n= 3: R 3 = 0 .35 3 bits 8 symbols in alphabet If block size n → ∞? H n ≤ R n < H n +1/n Problem - alphabet size and Huffman table size grows exponentiall...
Ngày tải lên: 26/10/2012, 11:57
Lecture 4 DictionaryMethods
... s 1 =b 38 LZW: Example (4a) step 2 Dictionary Codes : 0 1 2 4 3 6 0 a Message: a b ab a+ 1 b 2 ab 3 ba 4 ab a a) Input code c =4 Decode the 1st symbol s 1 =a of the code c =4 ⇒ Complete the previous ... (0,0,’_’) (4, 2,’d’) Message: 1. (0, 0,’s’): s 2. (0,0,’i’): s+i=si 3. (0,0,’r’): si+r=sir 4. (0,0,’_’): sir+_=sir_ 5. (4, 2,’d’): sir_+si+d=sir_sid Get 2 symbols ’si’ starting from...
Ngày tải lên: 26/10/2012, 11:57
ipv6 lecture, lesson, slide
... of 4444.4444.4444. Which of the following IPv6 addresses will the interface use? ipv6 unicast-routing ipv6 router rip tag1 interface FastEthernet0/0 ipv6 address 3456::1/64 a. 3456::C444:44FF:FE44:4444 b. ... of 4444.4444.4444. Which of the following IPv6 addresses will the interface use? ipv6 unicast-routing ipv6 router rip tag1 interface FastEthernet0/0 ipv6 address 3456::...
Ngày tải lên: 24/10/2014, 14:04
