LT300 communications INE 323a

Ngày tải lên: 13/09/2012, 10:21

... Networks (ISDN) – Transmit at 256 Kbps over regular phone lines • T1 lines – Transmit at 1.544 Mbps • Cable modems and digital subscriber lines (DSL) – Generally only available in residential areas – Maximum ... Environments • Employees in all lines of work no longer have to be away from the data they need – To help them make decisions • Wireless technologies allow businesses to create an o...

Ngày tải lên: 13/09/2012, 10:52

... (continued) • Antennas – Limited in size due to the dimensions of the tag itself – Types of antennas • Linear and circular – Larger antennas allow the tags to be read at greater distances – Higher frequency ... greatly – Classes of tags • Class 0 tags are read-only • Class 1 tags are read/write 2 Objectives • Define Radio Frequency Identification (RFID) • Explain the need for RFID and how RF...

Ngày tải lên: 13/09/2012, 10:52

... hours each day 2 Objectives • List the advantages of wireless communications for businesses • Discuss the challenges of wireless communications 7 Data Availability Around the Clock • Wireless ... efficient use of office space – Lower support and maintenance costs Wireless Communications Wireless Communications in Business 11 Summary • Wireless technology can positively impact an or...

Ngày tải lên: 13/09/2012, 11:16

... Transfer Protocol (FTP) • Three ways to work with FTP: – Web browser – FTP client – Command line • FTP servers can be configured to allow unauthenticated users to transfer files (called anonymous ... management IEEE 802.1x • Based on a standard established by the Institute for Electrical and Electronic Engineers (IEEE) • Gaining wide-spread popularity • Provides an authentication framewo...

Ngày tải lên: 17/09/2012, 10:43

... Area Networks (tt) • Các chuẩn của IEEE đưa ra: – 802.11a, 802.11b, 802.11g , 802.11n Wireless Communications- Truyền thông không dây Giới thiệu 40 Digital Convergence – Độ hội tụ số • Digital

Ngày tải lên: 17/09/2012, 10:43

... website 12 2.3.2 Marketing qua công cụ tìm kiếm - Search Engine Marketing (SEM) 13 2.3.2.1 Tối ưu hóa công cụ tìm kiếm - Search Engine Optimization (SEO) 16 CHUYÊN ĐỀ TỐT NGHIỆP GVHD : Ts ... Search Marketing. 2.3.2.1 Tối ưu hóa công cụ tìm kiếm - Search Engine Optimization (SEO) Tối ưu hóa công cụ tìm kiếm hay Search Engine Optimization (SEO) là tập hợp các phương pháp nhằm làm tă...

Ngày tải lên: 02/11/2012, 16:44

... WIRELESS COMMUNICATIONS Gregory D. Durgin (ABSTRACT) This report was written to satisfy the final dissertation requirements toward a doctoral degree in electrical engineering. The dissertation outlines ... 3 1.1 The Need for Improvement in Channel Modeling Theory The theory that engineers use to measure and model wireless communications has changed very little over the last 30 years. The m...

Ngày tải lên: 20/11/2012, 11:36

Ngày tải lên: 02/03/2013, 16:57

... (FFT). where and denote linear and circular convolution respectively. Signal and channel, however, are linearly convolved. After adding prefix and postfix extensions to each block, linear convolution ... per line symbol interval T/N is which is substantially below the requirement of an equalizer in a typical single carrier implementation for wireline applications. Multi-Carrier Digital Commu...

Ngày tải lên: 02/03/2013, 16:58