- 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.
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