tdd - cdma for wireless communications

... 180 0-1 900 (TDMA/FDD) •IS-95 (CDMA/ FDD) •WCDMA (CDMA/ FDD) •TD -CDMA (CDMA/ TDMA /TDD) •TD-SCDMA (CDMA/ TDMA /TDD) •MC -CDMA (CDMA/ FDD) •ISM band (CDMA /TDD) Fourth generation •Multicarrier CDMA? •Dissimilar ... correlated for all frequencies of the band. It is denoted as B c and is approximated from: 14 TDD- CDMA for Wireless Communications Figure 2.3 Fading due t...

Ngày tải lên: 27/05/2014, 04:01

... the largest-valued definition of bandwidth, non-zero bandwidth. f 0 ~ |X( )|f Common Definitions for Bandwidth half-power baseband half-power first null non-zero baseband null-to-null non-zero Figure ... envelope autoco- variance functions for H x -case. 156 6.4 Comparison between Clarke theoretical and approximate envelope autoco- variance functions for H y -case. 156 7.1 The transmitte...

Ngày tải lên: 20/11/2012, 11:36

... (GPRS)a standard for wireless communications that runs at 150 Kbps; and code division multiple access (CDMA) a North American standard for wireless communications that uses spread-spectrum technology to ... include X-band and Ka-band phase shifters for phased arrays and radar applications, film bulk acoustic (FBAR) filters for PCS communications, MEM resonator-based filters...

Ngày tải lên: 19/01/2014, 20:20

... Signal-to-Noise Ratio Set Partitioning Time-Division Multiplexing Time-Division Multiple Access United States CDMA, also IS-95, EVDO United States TDMA, also D-AMPS, ADC, IS-54, Wideband CDMA ... right-hand side Root-Raised Cosine Reduced State Sequence Estimation random variable Single Antenna Interference Cancellation Signal-to-Interference-plus-Noise Ratio Single-Input Sin...

Ngày tải lên: 16/03/2014, 22:20

... anywhere 28 The Wireless Landscape 29 The Wireless Landscape (continued) 3 How Wireless Technology is Used • Wireless – Describes devices and technologies that are not connected by a wire • Wireless communications – Transmission ... Network (continued) 27 Wireless Wide Area Network (continued) • Programming languages – BREW (Binary Run-Time Environment for Wireless) – J2M...

Ngày tải lên: 13/09/2012, 10:52

... isolate the exact location of counterfeiting activity • Tags in over-the-counter and prescription medication – Allow vision-impaired people using a special device to listen to a description ... with various kinds of sensors to monitor and record information – Cost of a tag can vary greatly – Classes of tags • Class 0 tags are read-only • Class 1 tags are read/write 12 RFID System Component...

Ngày tải lên: 13/09/2012, 10:52

... Wireless Communications Wireless Communications in Business 10 Challenges of Using Wireless Technology • Challenges include: – Competing technologies – Data security • Wireless technology’s ... technology 2 Objectives • List the advantages of wireless communications for businesses • Discuss the challenges of wireless communications 3 Advantages of Wireless Technolo...

Ngày tải lên: 13/09/2012, 11:16

... động 36 Wireless Wide Area Network (tt) 37 Wireless Wide Area Network (tt) • Các ngôn ngữ lập trình – BREW (Binary Run-Time Environment for Wireless) – J2ME (Java 2 Micro Edition) • Wireless ... có 1 wireless NIC – Có sẵn antenna bên trong 27 Wireless Local Area Networks (tt) 28 Wireless Local Area Networks (tt) • Các chuẩn của IEEE đưa ra: – 802.11a, 802.11b, 802.11g , 802.1...

Ngày tải lên: 17/09/2012, 10:43

... three multi-carrier technologies labeled MC- CDMA using the naming conventions of MC -CDMA, MC-DS -CDMA, and MT -CDMA, and we focus on MC -CDMA as defined by Prasad (detailed next). MC -CDMA was first ... Novel Transmitters for DS -CDMA 5.4 Novel Receiver Design for CI/DS -CDMA 5.5 High-capacity DS -CDMA via Pseudo-Orthogonal CI Chip Shaping 5.6 High Performance, High Capacity via...

Ngày tải lên: 02/03/2013, 16:59

... Perfect-collision Code-time-slot Model for TD /CDMA 237 5.3.1 TD /CDMA as a Mode for the UMTS Terrestrial Radio Access 237 5.3.2 The TD /CDMA Physical Layer Design Parameters 238 5.3.3 In-Slot Protocols ... Access TD/SCDMA Hybrid Time-Division Synchronous Code-Division Multiple Access TDD Time-Division Duplexing TDM Time-Division Multiplexing TDMA Time-Division Multiple Access TFC Tr...

Ngày tải lên: 02/03/2013, 16:59