What is Digital PCS?
Digital PCS is the most advanced
wireless technology on the market today. And IT&E, exclusively,
is bringing it to the people of Guam. Digital PCS is
a dependable, integrated,
efficient, convenient and powerful communication service that gives
you superior clarity, and excellent resources. Digital PCS networks
are 100% digital and offer customers more choice and new services.
Because of its greater capacity and digital technology, Digital PCS
calls are superior in quality to traditional cellular.
What is CDMA?
Code Division Multiple Access or
CDMA was originally used by the U.S. military, but today
has evolved into a commercial
product that supports
more wireless traffic at one time that any other wireless technology.
Instead of time-slotting, CDMA employs a 'spread spectrum' technique
that uses the airwaves more efficiently. This also provides better signal
performance, reducing the fading, echo and delay that plague some wireless
sytems. So the bottom line is that more capacity means almost no dropped
calls or busy signals. And better signal performances means better voice
quality.
How does CDMA Work?
CDMA uses the spread spectrum technique and gives each call
a unique digital code. This enables several conversations
to use the same radio
frequency at the same time. The unique code keeps the calls separate
and secure. Each conversation is spread out over the shared channel's
bandwidth allowing transmissions with the same codes to be reassembled
into a conversation. That's why, with CDMA, there's virtually no eavesdropping,
cloning or cross-talk.
What are the benefits of CDMA?
Increased Capacity - With CDMA,
the IT&E Wireless Digital PCS Network
provides a system capacity that is 10 - 20 times greater than analog
systems. This means virtually no dropped calls or busy signals.
Virtually
no background noise or interference - Only CDMA uses a
special receiver to combine multiple signals and improved
signal strength. This
eliminates interference and fading altogether. Background noise is
filtered out by using a narrow bandwidth that corresponds
to the frequency range
of the human voice.
Longer Talk Time - CDMA has power
control, so your phone only uses the amount of power it
needs at any given
time. CDMA phones use less
output
power than analog cellular phones. And lower power requirements mean
smaller, lighter phones with more talk time and longer standby time.
Security and Privacy - with 4.4
trillion code combinations, there is less chance of eavesdroppping,
cloning or cross-talk.
Almost no dropped calls - Other
wireless technologies use a 'hard handoff' as you travel
between cell sites
and commonly drop calls
mid-conversation.
CDMA uses a 'soft handoff', which connects you with the next
cell site before you leave the one you're on.
Enhanced
voice quality - CDMA translates your voice into digital
transmissions, or tiny sound bites, at the highest translation
rates possible. This
makes your voice clear and maximizes the system capacity. |