Next generation wireless systems and networks phần 5 ppt

... telecommunication services: PSTN and IP networks. Next Generation Wireless Systems and Networks Hsiao-Hwa Chen and Mohsen Guizani  2006 John Wiley & Sons, Ltd 234 WIRELESS DATA NETWORKS • Up to eight ... Mbps, and in the late 1990s the Gigabit Ethernet was standardized Next Generation Wireless Systems and Networks Hsiao-Hwa Chen and Mohsen Guizani  2...

Ngày tải lên: 09/08/2014, 19:22

... channel, and g(τ) is the com- bined effect of the transmitter pulse-shaping and the receiver matched-filtering. Thus, the received Next Generation Wireless Systems and Networks Hsiao-Hwa Chen and Mohsen ... TECHNOLOGIES FOR B3G WIRELESS Figure 7.18 Various IEEE 802 standards, in which UWB technologies have been covered in IEEE 802. 15. 3a standard for WPAN applications. wi...

Ngày tải lên: 09/08/2014, 19:22

... comparison easily and objectively. For instance, if we want to compare BPSK and QPSK DSSS systems shown in Figures 2.10 and 2.20, we should fix the data rate and PG first (thus the bandwidth), allowing ... (2–3G) wireless communication systems, exemplified by its applications in many impor- tant standards, such as IS- 95 [317–344], CDMA2000 [3 45] , UMTS-UTRA [4 25] , WCDMA [431]...

Ngày tải lên: 09/08/2014, 19:22

... addition to the IS -54 B, IS-136 and GSM standards, there are many other 2G wireless and cordless digital telephone systems that have been proposed and adopted by different countries and regions in ... 19 85 France RTMS (Radio Telephone Mobile System) September, 19 85 Italy TACS (Total Access Communications System) 19 85 United Kingdom, Italy, Spain, Austria, Ireland the other...

Ngày tải lên: 09/08/2014, 19:22

... 0.667/10 ms 0.667/10 ms 0.6 75/ 5 ms Timeslots/Frame N.A. 15 7 *Range: 80 dB (UL), 30 dB (DL) in step of **0. 25 to 1 .5 dB; ***1, 2 or 3 dB. 3G MOBILE CELLULAR TECHNOLOGIES 155 Examples of this reuse ... 3 and 11 influence the procedure. There are three types of handovers specified in UMTS. (1) Intrafrequency handovers; (2) Inter- frequency handovers; and (3) InterRAT handovers, where...

Ngày tải lên: 09/08/2014, 19:22

... need to be synchronized in time, and every active user is assigned a particular time slot in the Next Generation Wireless Systems and Networks Hsiao-Hwa Chen and Mohsen Guizani  2006 John Wiley ... infinite, and 262 ARCHITECTURE OF B3G WIRELESS SYSTEMS Reconfigurability and spectrum issues are changing the way wireless networks are planned. Planners are mindful of Q...

Ngày tải lên: 09/08/2014, 19:22

... various wireless applications, such as wireless regional area networks (WRANs), wireless metropolitan area networks (WMANs), wireless local area networks (WLANs), and wireless personal area networks ... the unlicensed radio band. Particularly, we focus on the challenges faced by IEEE 802 WLANs operating in the newly allocated 5. 470 5. 7 25 GHz band and the 3. 650 –3.7...

Ngày tải lên: 09/08/2014, 19:22

... scheme Transmission BW 1. 25 MHz 2 .5 MHz 5 MHz 10 MHz 15 MHz 20 MHz Subframe duration 0 .5 ms 0 .5 ms 0 .5 ms 0 .5 ms 0 .5 ms 0 .5 ms Subcarrier spacing 15 kHz 15 kHz 15 kHz 15 kHz 15 kHz 15 kHz Sampling frequency 1.92 ... different bandwidths, such as 1. 25 MHz, 2 .5 MHz, 5 MHz, 10 MHz, 15 MHz, and 20 MHz, in both the UL and DL. Operations in paired and unpaired...

Ngày tải lên: 09/08/2014, 19:22

... 138, 140–1 45 DO, 123, 151 , 152 , 166 DV, 123, 153 , 154 , 155 , 162, 164 2.5G, 238, 249 2G, 5, 61, 67, 117, 155 , 1 65, 202, 238, 249, 268, 398 CDMA system, 156 GSM network, 155 3.5G, 398 3G, 3, 5 10, 41, 61, ... (IMT-2000), 5, 6, 7, 73, 122, 124, 155 –202, 268 roaming, 267 Standardization Organization (ISO), 1 05 OSI reference model, 1 05 Telecommunication Union (ITU), 5, 73, 121,...

Ngày tải lên: 09/08/2014, 19:22

... 28,610,000 58 ,608 ,56 5 48.8 3.0 France 25, 614,899 60,619,718 42.3 2.7 Brazil 22,320,000 181,823,6 45 12.3 2.4 Russia 22,300,000 144,003,901 15. 5 2.4 Canada 20, 450 ,000 32, 050 ,369 63.8 2.2 Spain 15, 5 65, 138 ... design methodologies and concepts for wireless systems and networks. This book project was initiated to respond to the evolutional trend in the design of wireless...

Ngày tải lên: 03/06/2014, 01:05