Satellite radio uses satellites to broadcast radio signals over a wide geographic area. It was pioneered in the 1990s to provide digital audio services to Africa and Asia. Two main players, Sirius and XM, launched geosynchronous satellites to broadcast over 150 commercial-free music and talk channels to vehicles and homes in North America. Satellite radio offers advantages over terrestrial radio like no commercials or signal interruptions, but requires a subscription fee and dedicated receiver. Its future outlook is positive as the technology integrates further into vehicles.

3.  DEFINATION
 HISTORY
 SYSTEM DESIGN
 WORKING
 RADIO Vs SATELLITE RADIO
 MARKET PLAYERS
 PROS AND CONS
 CONCLUSION

4. Satellite radio is an
analogue or digital radio
signal that is relayed
through one or more
satellite and thus can be
received in a much wider
geographical area than
terrestrial FM radio
stations .

5.  World space corporation was founded in 1990 by NOAH. A.
SAMARA, chairman and ceo.
 He founded the company with a vision to provide digital
satellite audio, data, and multimedia services primarily to the
emerging market of africa and asia.
 To implement this vision , world space conceived and built the
first ever satellite radio infrastructure in the world.
 In the last 12 years the company has built the satellite and
launched two companies to provide audio, data and multimedia
broadcasting coverage to africa and asia.

6.  Satellite radio uses the 2.3 GHz S band in North
America and generally shares the 1.4 GHz L band with
local Digital Audio Broadcasting stations.
 Two or three are usually sufficient to provide coverage
for an entire continent.
 Local repeaters enable signals to be available even if
the view of the satellite is blocked.
 Major tunnels can also have repeaters.Each receiver
has an Electronic serial Number(ESN) Radio ID ,to
identify it.Satellite radio also transmits program-
associated data,with the artist and title of each song
and possibly the name of the channel.

7. UPLINK
STATION,
SATELLITE TERRESTRIAL
& REPEATERS
TERRESTRIA
L
REPEATERS
CONTROL
ROOM
FIXED RECEIVERS
MOBILE
RECEIVERS

8.  A single song , as it travels off a CD ROM or
Hard disk gets diced and sliced in an encoder.
 Combined in a multiplexer.
 Gets bounced up onto the satellite.
 Then back down to the receivers where it is
decoded with header information.
 Finally transforms into analog so that the
primitive human ears can enjoy it.

9.  Analog Radio
Here the audio signal is piggybacked on a carrier signal
by means of analog modulation techniques like
AM,FM.
 Digital Radio
Here , the audio signal is digitized and then transmitted
using digital modulation techniques like QAM.
AM SATELLITE RADIO
FM HD RADIO

10. ANALOG VS DIGITAL
RADIO ANALOG DIGITAL
Compression Not Possible Possible
Bandwidth Usage Large(not efficient);FM- Low
200KHz%/channel
Link Adaptation Not possible Possible
Metadata Not Available Available
Encryption Not Possible Possible
Interference Highly Susceptible Less Susceptible

11.  COST :
AM and FM(terrestrial) radio are both free of charge,so long as you
have a radio. You simply turn the radio on and tune it. Satellite
radio,on the other hand, requires a monthly subscription fee that
varies ,depending on which service you choose and how many
stations you want to service. This cost difference is probably the
highest advantage teresstrial radio has over satellite radio.
 PROGRAMMING:
The biggest advantage satellite radio has is the context of its
content. When you simply turn on your am/fm stereo,your
entertainment options are restricted to the stations you can receive.
With fewer choices,you may be stuck with an insufficient number of
options. Satellite radio ,on the other hand ,features more than 200
channels that are narrowly foccused to all kinds of interests.

12.  Reception :
Depending on your location , you may only able to
receive a couple dozen station when listening to
terrestrial radio. Sattelite radio delivers good reception.
 Portability :
At the moment, AM & FM radio have a big advantage
over sattelite radio. It is very easy to switch on your
portable radio and listen to some tunes or a talk show.
Reception of sattelite radio require a much more
complicated antenna ,so portable sattelite radio unit
cost is far more than portable terrestrial radio.

13. BROADCASTER REGIONS START OF SATELLITES
SERVED OPERATIONS
CONTINENTAL 2002 3 Geosynchronous
US,CANADA,CAR
IBBEAN
CONTINENTAL 2001 2 Geosynchronous
US,CANADA,CAR
IBBEAN

14. SIRIUS VS
XM Satellites
SIRIUS
3 satellites
XM
2 satellites
Price $12.95 per month $12.95 per month for basic
package
Availability The continental United The continental United
States and Canada States and Canada
Subscribers 8+ million in 2008 9+ million in 2008
Already Installed Available installed in Available installed in a
many cars, including variety of cars, including
Chrysler, BMW, Mazda, Audi, GM, Honda, Nissan,
Mitsubishi, Toyota, Hyundai, Toyota and
Volkswagen and Ford cars Porsche models
Programming 130+ channels, 170+ channels,
including:69 commercial- including:70 commercial-
free music channels18 free music channels92
news and talk channels news, sports, talk and
entertainment channels

15.  One of the greatest advantage of satellite radio is
the fact that the programs are not interrupted by
commercials.
 Another great thing about satellite radio is the
absence of static.
 Satellite radio tuners receive,along with the actual
radio programs,an influx of metadata that consists
of information regarding song title,artist,radio
program and radio channel.
 All satellite radio programs are uncensored.

16.  Subscription fee
 Receiver purchase
 Signal interruptions
 Signal Limitations
 Mature Content

17. Radio Listenership Is
Growing
240,000,000 235 Million
Listeners
230,000,000
Radio’s
total
220,000,000 audience
has
grown 16%
210,000,000 since 1994
200,000,000
__________
Radio has
190,000,000 added six
million
listeners
180,000,000 since 2005
1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008
Source: RADAR, Fall Survey Reports, Copyright Arbitron (Monday-Sunday, 24 Hours, based on Weekly Cume, 12+

18. Radio Reaches 92 million More People
Each Week Than Google Reaches In
An Entire Month
Sources: Radar 97, June 2008 (Monday-Sunday, 24hrs, based on daily cume 18+) ; ComScore May 2008

19.  Planning to have Satellite radios as an option in
upcoming cars.
 Channel line-up improves overtime.
 Keeping one eye on road and listening to radio
traffic report. Soon Satellite radio system in cars
may able to match it.
 Down the road,having video streaming through
your satellite radio system is a possibility.

20. You’ll fall in love with the way Radio is
emerging now a days in terms of music
, entertainment and knowledge.
The time is here when Radio has become an
integral part of our lives and there is no bad in
enhancing the techniques , to get the facilities
which we need to enjoy and learn something
new.