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Thursday, February 28, 2013
Sunday, January 20, 2013
casino games Australia
Casino games are a broad variety of games that you can play while placing wagers on the potential outcomes. While in a real casino the games can be played on machines or at tables, in the online casino, you can play those same games on your computer.
You can try your hand at casino games like blackjack, craps, roulette, slots and video poker in most online casinos. In blackjack, the objective is to collect cards that add up to 21 without going over in order to beat the dealer and other players. In craps, you can bet on the outcome of the toss of dice. The idea in roulette is to wager on where the ball will come to a halt on a spinning wheel. Slots are a machine-based game where you gamble on the reels stopping in such a position that symbols of the same kind will be aligned. And in video poker, you want to get a hand of cards with high-scoring combinations, much as you would in regular five-card poker.
You can try your hand at casino games like blackjack, craps, roulette, slots and video poker in most online casinos. In blackjack, the objective is to collect cards that add up to 21 without going over in order to beat the dealer and other players. In craps, you can bet on the outcome of the toss of dice. The idea in roulette is to wager on where the ball will come to a halt on a spinning wheel. Slots are a machine-based game where you gamble on the reels stopping in such a position that symbols of the same kind will be aligned. And in video poker, you want to get a hand of cards with high-scoring combinations, much as you would in regular five-card poker.
Monday, October 1, 2012
Saturday, September 29, 2012
Which technology is better?
Before deciding which technology is superior.let's talk a little more about these two technologies:
- CDMA: stands for code Division Multiple Access.Both data and voice are separated from signals using codes and then transmitted using a wide frequency range.Because of this.there are more space left for data transfer(this was one of the reasons why CDMA is the preferred technology for the 3G generation which is broadband access and the use of big multimedia messages).14% of the worldwide market goes to CDMA. For the 3G generation CDMA uses 1x EV-DO and EV-DV. It was a lot of users in asia,specially in south korea.
- GSM: stands for Global system mobile .Even though it is sold as"the latest technology" in several countries ,this technology is older than CDMA( and also TDMA). But keep in mind that this doesn't means that GSM is inferior or worse than CDMA.Roaming readiness and fraud prevention are two major advantages from this technology. GSM is the most used cell phone technology in the world,with 73% of the worldwide market. It has a very strong presence in Europe.
TDMA technology is the less used from the three main digital technologies(GSM,CDMA,TDMA) and we think it will gradually be replaced to CDMA or GSM. That's why the GSM vs CDMA war. At one corner,GSM operators say it is better" because it uses a SIM chip,it is the most used technology worldwide ,it is more secure and it is more advanced".On the other corner, CDMA follows say it is better "because it is the 3G generation chosen technology and GSM will migrate to CDMA since CDMA is more advanced..."
y to describe the war between
But which one of these staements are correct? Acordingly to nokia, "this discussion is not about technology anymore,but about market". We think this is the best way to describe the war between these two cell phone technologies.
In the beginning, GSM was in fact superior. It had more services and allowed more data transfer. But CDMAA,facing the advantages of the competitor standard,soon delivered the same features found on GSM now a days. it is not possible to say that GSM services are better than CDMA. Miltimedia messages,video,high-speed internet access,digital camera and even PDA function are some of the features we can found on both technologies. The new CDMA 1xRTT technology, which previews what G3 cell phones will bring,is more advanced than EDGE, technology from the beginning of 3G generation.allowing higher transfer rates.
Even the GSM SIM card advantages,that allows you to change your cell phone and keep your phone list, is being surplussed by some CDMA operators with a service that allows you to store your phone book on the operator's database,allowing you to recover your phone book even if your cell phone is stolen(which is not possible with GSM, since if your cell phone is stolen ,your sim card will be stolen together). Noties that recently a new accessory called SIM backup was released,which allows you to backup the data stored in your SIM sard.Also some GSM operators are offering a similar backup service.
So, nowadays both technologies are equiparated in technology, but this picture won't be like that in the future. Afterall, CDMA evolution ground is wider and in a few years it will be superior than GSM. This means that GSM operators will disapear? Not at all. They will migrate over CDMA and the war will continue, because the existing CDMA operators chose to use 1xEV-DO and1XEV-DV technologies for their 3G network and the existing GSM operators have opted for a different technology, called WCDMA. Also, even though the current GSM operators will migrate to WCDMA, they still can use their existing GSM network. So users won't feel anything special when the operators shift to the new cell generation (3G), independently from the technology they choose.
So, nowadays both technologies are equiparated in technology, but this picture won't be like that in the future. Afterall, CDMA evolution ground is wider and in a few years it will be superior than GSM. This means that GSM operators will disapear? Not at all. They will migrate over CDMA and the war will continue, because the existing CDMA operators chose to use 1xEV-DO and1XEV-DV technologies for their 3G network and the existing GSM operators have opted for a different technology, called WCDMA. Also, even though the current GSM operators will migrate to WCDMA, they still can use their existing GSM network. So users won't feel anything special when the operators shift to the new cell generation (3G), independently from the technology they choose.
Friday, September 28, 2012
Difference between CDMA and GSM
Ans1.
Difference between CDMA & GSM-
These are the two different means of mobile communication being presently used world wide. The basic difference lies in the Multiplexing method used in the airial communication i.e. from Mobile Tower to your mobile and vice versa...
CDMA uses Code Division Multiple Assess as the name itself indicates, for example you are in a hall occupied with number of people speaking different language. You will find that the one language you are knowing will be heard by you and the others will be treated like noise. In the same manner each CDMA mobile communication takes place with a "code" communicating between them and the other end if one is knowing that code then only it can listen to the data being transmitted i.e. the communication is in the coded form.
On the other hand GSM uses Frequency Division Multiplexing in which each user is allocated a particular bandwidth till the communication is taking place.
Ans 2. About the sim card....
CDMA handsets do not use SIM cards. The handset is assigned a number from the telecom operator and get incorporated in itself. CDMA handset have RSN number which gets linked to a specific number assigned by operator.
Ans 4. full form of GSM & CDMA.
GSM - Global System for Mobile communication.
CDMA - Code Division Multiple Access
Another Answer::::
Difference between CDMA & GSM-
These are the two different means of mobile communication being presently used world wide. The basic difference lies in the Multiplexing method used in the airial communication i.e. from Mobile Tower to your mobile and vice versa...
CDMA uses Code Division Multiple Assess as the name itself indicates, for example you are in a hall occupied with number of people speaking different language. You will find that the one language you are knowing will be heard by you and the others will be treated like noise. In the same manner each CDMA mobile communication takes place with a "code" communicating between them and the other end if one is knowing that code then only it can listen to the data being transmitted i.e. the communication is in the coded form.
On the other hand GSM uses Frequency Division Multiplexing in which each user is allocated a particular bandwidth till the communication is taking place.
Ans 2. About the sim card....
CDMA handsets do not use SIM cards. The handset is assigned a number from the telecom operator and get incorporated in itself. CDMA handset have RSN number which gets linked to a specific number assigned by operator.
Ans 4. full form of GSM & CDMA.
GSM - Global System for Mobile communication.
CDMA - Code Division Multiple Access
Another Answer::::
gsm is stands for global system for mobile communication. it use tdma & fdma techniques as access mechanism . in gsm we devide bandwidth in to time slots for better utilization of bandwidth.cdma stands for code devision muliple access it use cdma techniques as access mechanism . in cdma we allocate a unique code for every user saparately and allocate bandwidth to user
Answer:::::
The main difference between GSM and CDMA is: In GSM, the entire frequency band is not available to the end-user, while in CDMA the entire frequency band is available to the end-user. So, the Frequency Re-use factor is 1 in CDMA. GSM Works as follows: --------------------- The entire frequency band is divided into chunks and each such chunk is divided into timeslots and each such portion is made available to a user. CDMA Works as follows: ----------------------- The entire frequency band is available to the user. So, in order to differentiate, the transmission from each user is "spread" or coded using an unique code given to individual user. At the receiving end, the spread information is decoded.Answer:GSM is a Global Syatem For Mobile Communication.GSM Operates 3 bands, 1) GSM 900 2) GSM 1800 and 3) GSM 1900. GSM 900 & GSM 1800 are used in india, But, GSM 1900 used in USA.GSM and CDMA techniques can be explained with an example,suppose there are 10 persons in a room and they want to communicate with each other .How can they communicate? First method:One persons speaks at one time that means we have provided a definite time interval to that person.-GSM Second method :all the peers speak at a time in a different language which we call as CDMA CDMA stands for Code Division Multiple Access and GSM stands for Global system for Mobile Communication. In CDMA phones the software is integral with the phone instrument and in the case of GSM phones it is through the SIM Card. CDMA phone instruments are dedicated to the service provider. GSM phone instruments are portable across service providers through SIM cards.Answer:::::::::::::GSM: In GSM only 30 or 35 peoples can call at at time in a singal carrier but InCDMA apprx 70 peoples can call in a singal carrier at a time
Q. What is the meaning of C.D.M.A & G.S.M. TECHNOLOGY, & IT'S FULL FORM
1.N cellular service there are two main competing network technologies: Global System for Mobile Communications (GSM) and Code Division Multiple Access (CDMA). Cellular carriers including Sprint PCS, Cingular Wireless, Verizon and T-Mobile use one or the other. Understanding the difference between GSM and CDMA will allow you to choose a carrier that uses the preferable network technology for your needs.
The GSM Association is an international organization founded in 1987, dedicated to providing, developing, and overseeing the worldwide wireless standard of GSM. CDMA, a proprietary standard designed by Qualcomm in the United States, has been the dominant network standard for North America and parts of Asia. However, GSM networks continue to make inroads in the United States, as CDMA networks make progress in other parts of the world. There are camps on both sides that firmly believe either GSM or CDMA architecture is superior to the other.
In 1989, GSM responsibility was transferred to the European Telecommunication Standards Institute (ETSI), and phase I of the GSM specifications were published in 1990. Commercial service was started in mid1991, and by 1993 there were 36 GSM networks in 22 countries, with 25 additional countries having already selected or considering GSM In addition to Europe, South Africa, Australia, and many Middle and Far East countries have chosen to adopt GSM. By the beginning of 1994, there were 1.3 million subscribers worldwide. The acronym GSM now (aptly) stands for Global System for Mobile telecommunications.
From the beginning, the planners of GSM wanted ISDN compatibility in services offered and control signaling used. The radio link imposed some limitations, however, since the standard ISDN bit rate of 64 Kbps could not be practically achieved.
The digital nature of GSM allows data, both synchronous and asynchronous data, to be transported as a bearer service to or from an ISDN terminal. The data rates supported by GSM are 300 bps, 600 bps, 1200 bps, 2400 bps, and 9600 bps.
The most basic teleservice supported by GSM is telephony. A unique feature of GSM compared to older analog systems is the Short Message Service (SMS). Supplementary services are provided on top of teleservices or bearer services, and include features such as international roaming, caller identification, call forwarding, call waiting, multiparty conversations, and barring of outgoing (international) calls, among others.
CDMA
Code Division Multiple Access (CDMA) is a digital air interface standard, claiming eight to fifteen times the capacity of traditional analog cellular systems. It employs a commercial adaptation of a military spread-spectrum technology. Based on spread spectrum theory, it gives essentially the same services and qualities as wireline service. The primary difference is that access to the local exchange carrier (LEC) is provided via a wireless phone.
Though CDMAs application in cellular telephony is relatively new, it is not a new technology. CDMA has been used in many military applications, such as:
* Anti-jamming (because of the spread signal, it is difficult to jam or interfere with a CDMA signal).
* Ranging (measuring the distance of the transmission to know when it will be received).
* Secure communications (the spread spectrum signal is very hard to detect).
CDMA is a spread spectrum technology, which means that it spreads the information contained in a particular signal of interest over a much greater bandwidth than the original signal. With CDMA, unique digital codes, rather than separate RF frequencies or channels, are used to differentiate subscribers. The codes are shared by both the mobile station (cellular phone) and the base station, and are called pseudo-random code sequences. Since each user is separated by a unique code, all users can share the same frequency band (range of radio spectrum). This gives many unique advantages to the CDMA technique over other RF techniques in cellular communication.
CDMA is a digital multiple access technique and this cellular aspect of the protocol is specified by the Telecommunications Industry Association (TIA) as IS-95. In CDMA, the BSSAP is divided into the DTAP and BSMAP (which corresponds to BSSMAP in GSM)
The GSM Association is an international organization founded in 1987, dedicated to providing, developing, and overseeing the worldwide wireless standard of GSM. CDMA, a proprietary standard designed by Qualcomm in the United States, has been the dominant network standard for North America and parts of Asia. However, GSM networks continue to make inroads in the United States, as CDMA networks make progress in other parts of the world. There are camps on both sides that firmly believe either GSM or CDMA architecture is superior to the other.
2.Gsm means all sim support this mobile & cdma means only particular singal company sim supported
3.In Mobile, what is the mean of CDMA & GSM
4.GSM
In 1989, GSM responsibility was transferred to the European Telecommunication Standards Institute (ETSI), and phase I of the GSM specifications were published in 1990. Commercial service was started in mid1991, and by 1993 there were 36 GSM networks in 22 countries, with 25 additional countries having already selected or considering GSM In addition to Europe, South Africa, Australia, and many Middle and Far East countries have chosen to adopt GSM. By the beginning of 1994, there were 1.3 million subscribers worldwide. The acronym GSM now (aptly) stands for Global System for Mobile telecommunications.
From the beginning, the planners of GSM wanted ISDN compatibility in services offered and control signaling used. The radio link imposed some limitations, however, since the standard ISDN bit rate of 64 Kbps could not be practically achieved.
The digital nature of GSM allows data, both synchronous and asynchronous data, to be transported as a bearer service to or from an ISDN terminal. The data rates supported by GSM are 300 bps, 600 bps, 1200 bps, 2400 bps, and 9600 bps.
The most basic teleservice supported by GSM is telephony. A unique feature of GSM compared to older analog systems is the Short Message Service (SMS). Supplementary services are provided on top of teleservices or bearer services, and include features such as international roaming, caller identification, call forwarding, call waiting, multiparty conversations, and barring of outgoing (international) calls, among others.
CDMA
Code Division Multiple Access (CDMA) is a digital air interface standard, claiming eight to fifteen times the capacity of traditional analog cellular systems. It employs a commercial adaptation of a military spread-spectrum technology. Based on spread spectrum theory, it gives essentially the same services and qualities as wireline service. The primary difference is that access to the local exchange carrier (LEC) is provided via a wireless phone.
Though CDMAs application in cellular telephony is relatively new, it is not a new technology. CDMA has been used in many military applications, such as:
* Anti-jamming (because of the spread signal, it is difficult to jam or interfere with a CDMA signal).
* Ranging (measuring the distance of the transmission to know when it will be received).
* Secure communications (the spread spectrum signal is very hard to detect).
CDMA is a spread spectrum technology, which means that it spreads the information contained in a particular signal of interest over a much greater bandwidth than the original signal. With CDMA, unique digital codes, rather than separate RF frequencies or channels, are used to differentiate subscribers. The codes are shared by both the mobile station (cellular phone) and the base station, and are called pseudo-random code sequences. Since each user is separated by a unique code, all users can share the same frequency band (range of radio spectrum). This gives many unique advantages to the CDMA technique over other RF techniques in cellular communication.
CDMA is a digital multiple access technique and this cellular aspect of the protocol is specified by the Telecommunications Industry Association (TIA) as IS-95. In CDMA, the BSSAP is divided into the DTAP and BSMAP (which corresponds to BSSMAP in GSM)
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