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While the current cellular phones use WAP to transfer music from a web-site to the handset, UN Receiver proposes to modulate the music into radio frequencies and transmit to the handset using CDMA medium. This results in higher speeds of transfer when compared to WAP that the typical cellular mobile phones use, even if the mobile phone uses GPRS. This is achievable because the content that is being transferred from the website to the handset is known to be music. WAP is a general purpose protocol, allowing any kind of data to be transferred, mainly WML code. But since the content is restricted to music, UN Receiver uses the CDMA medium itself to transfer the contents instead of WAP. Any other data transfer is carried out using the control frequencies of CDMA.
Since they use WAP, the normal mobile phones require that the web sites they communicate with be specially designed. The UN Receiver doesn?t require this, as only indirect communication is made with the site.
Normal radio receivers cannot be upgraded to UN Receiver. UN Receiver is a specially made CDMA transceiver, though its name indicates that it is only a receiver.
Since CDMA is the medium of communication, the central transmitter is not required to be that powerful, nor do the handsets. The actual transmission/reception is carried out between the handset and the nearest transmission tower, as in the case of currently available cellular mobile phones.
The UN Receiver may be considered as a special purpose cellular mobile device, capable of receiving and playing music from a central broadcasting station. Value added services could include messaging service, but from the central broadcasting station to the handset only, and not between handsets. This is mainly because the purpose of the UN Receiver is to receive music, and not communication.
The only similarity between the UN Receiver and the currently available CDMA cellular mobile phones is the fact that they both use the CDMA RF transmission technology. The mobile phone is a communication device; messaging is an integral part of its functionality. The UN Receiver is an personal entertainment system; it can receive RF transmission that a central broadcasting station transmits through local towers, and play back the music to the user.
The difference between a normal radio and the UN Receiver is that with the radio, the users don?t have a choice as to what they listen, whereas in the UN Receiver, they can program what they want to listen ? they get to listen to personalized content. With the normal radio, there?s no guaranteed way of calculating the number of listeners at any given point of time except statistical projections based on educated and informed ?guess? work; with the UN Receiver, the transmission system knows exactly how many listeners are currently listening to the broadcast at any given moment.
To sum up, the UN Receiver is more like a personal CD player, with the exception that the content is received at runtime from a central storage over the air using Wideband CDMA technology.