Important: Use custom search function to get better results from our thousands of pages

Use " " for compulsory search eg:"electronics seminar" , use -" " for filter something eg: "electronics seminar" -"/tag/" (used for exclude results from tag pages)
Ask More Info Of  A Seminar Ask More Info Of A Project Post Reply  Follow us on Twitter
23-11-2012, 12:17 PM
Post: #1
RECENT TRENDS IN WIRELESS COMMUNICATION PPT
RECENT TRENDS IN WIRELESS COMMUNICATION


.ppt  RECENT TRENDS.ppt (Size: 544 KB / Downloads: 144)

Objectives

Where is wireless broadband today? Where has it come from in the last decade? What is its future potential?
What are key wireless communication concepts?
How do they feature in modern/emerging wireless systems (Wifi: 802.11a/b/g/n, 3G, mobile WIMAX: 802.16e)?
Modern wireless systems – WiFi , Bluetooth, Zibgee, 3G, GSM, CDMA, WiMAX, UWB,. .

Why Wireless?

Characteristics
Mostly radio transmission

Advantages

Spatial flexibility
Ad hoc networks
No problems with wiring
Robust against disasters like earthquake, fire

Disadvantages

Low transmission rates for higher no. of users
Many national regulations, global regulations
Restricted frequency range, interferences of frequencies
Nevertheless, in the last 10-20 years, it has really been a wireless revolution…

Early Wireless Systems

1st Generation: Analog: early 80s
AMPS: FDMA with 30 KHz FM voice channels.
FCC increased the cellular spectral allocation from 40 MHz to 50 MHz.
Two 25MHz channels: DL and UL (FDD)
Drawbacks:
Analog - very susceptible to static and noise

2nd Generation: digital: early 90s

higher capacity, improved cost, higher data rates for support of digital services,
DECT: 1880-1900 MHz spectrum, multicarrier /TDMA/TDD structure
FHMA/TDMA/TDD provides up to 120 channels
Interference-free wireless operation ~100 to 500 mts outdoor
Average data transmission: 1.2 Mbps

Wi-Fi

Local area networking technology designed to provide in-building or campus broadband coverage
Based on IEEE 802.11a/b/g/n standards
Much higher peak data rates + larger bandwidth (20 MHz)
Beyond buildings: Metropolitan-wide (Muni-Fi), Neighborhood Area Networks (NaN), hotspots
Wide availability of terminal devices
Covers greater distances
Wi-Fi systems - not designed to support high-speed mobility.
High power consumption
Requires more expensive hardware

CDMA Broadband: 1xEV-DO

High-speed data standard defined as an evolution to second generation IS-95 CDMA systems
Peak downlink data rate of 2.4 Mbps in a 1.25 MHz channel.
Flexibility to support both user- and application- level QoS
User-level QoS – providers offer premium services
Application-level – operators allocate resources - applicants need
Multimode 1xEV-DO - will let subscribers receive incoming voice calls even while actively downloading data
Support high speed internet access at pedestrian or vehicle speeds
Multicast and broadcast services - supported

Conclusion

Wireless Technology – rapidly growing and generating tremendous changes in telecommunications and networking
Data transmission rates increased tremendously from 9.6 kbps (GSM) to 2Mbps (WCDMA), increasing more than 200 times within last 10 yearsMore ambitious 4G – approximately 1 Gbps
Great demands on capacity and quality offered over wireless communication links have pushed us hard to innovate new design methodologies and concepts for the wireless systems and networks.
But, despite many promising technologies, the reality that
… services many users at high data rates …
…. (fixed and mobile) …
… with reasonable bandwidth and power resources…
… while maintaining high coverage and quality of service
….. has not yet been achieved.
Rating RECENT TRENDS IN WIRELESS COMMUNICATION PPT Options
Share RECENT TRENDS IN WIRELESS COMMUNICATION PPT To Your Friends :- Seminar Topics Bookmark
Post Reply 

Marked Categories : powerpoint presentation on trends in wireless computing, download ppt on trends in wireless computing, recent trends in mobile communication, computer hardware trends 2012 ppt, ppt of triend in wireless computers, future trends in wireless communication ppt 2012, future trends in wireless communication ppt, free download ppt presentation on trends in wireless computing, trends in wireless communication ppt, wireless communications trends ppt, recent trends in tdma ppts, recent trends in wireless communication ppt, recent trends in cdma ppt, seminar topic on wireless communication ppt, ppt on wireless trends, recent trends in wireless communication,

[-]
Quick Reply
Message
Type your reply to this message here.


Image Verification
Image Verification
(case insensitive)
Please enter the text within the image on the left in to the text box below. This process is used to prevent automated posts.

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  WDM Optical Communication Networks seminar code 0 26 Yesterday 03:19 PM
Last Post: seminar code
  GI-FI-THE NEXT GENERATION WIRELESS TECHNOLOGY. seminar code 0 29 23-07-2014 02:47 PM
Last Post: seminar code
  Wireless Sensor Network seminar code 0 33 23-07-2014 11:40 AM
Last Post: seminar code
  Multi-Bandwidth Data Path Design for 5G Wireless Mobile Internets seminar code 0 55 22-07-2014 03:03 PM
Last Post: seminar code
  Mobile Wireless Internet Radio Access Networks project maker 0 33 19-07-2014 11:58 AM
Last Post: project maker
  Wireless Charging of Mobile Phone using Microwaves! seminar code 0 92 18-07-2014 03:20 PM
Last Post: seminar code
  SECURITY IN WIRELESS MESH NETWORK project maker 0 38 17-07-2014 09:41 AM
Last Post: project maker
  A Low-Cost Efficient Wireless Architecture for Rural Network Connectivity seminar addict 2 784 30-06-2014 11:19 AM
Last Post: mkaasees
  DAKNET (WIRELESS TECHNOLOGY) seminar code 0 101 28-06-2014 04:42 PM
Last Post: seminar code
  Wireless Sensor Network Security model using Zero Knowledge Protocol seminar code 0 50 25-06-2014 11:47 AM
Last Post: seminar code
This Page May Contain What is RECENT TRENDS IN WIRELESS COMMUNICATION PPT And Latest Information/News About RECENT TRENDS IN WIRELESS COMMUNICATION PPT,If Not ...Use Search to get more info about RECENT TRENDS IN WIRELESS COMMUNICATION PPT Or Ask Here

Options: