_vpratesn Appitcation Prose
Pn nnomntiovimmaony
_ herein
sion Duplex (TDD): § Separates
users by employing codes, frequencies and time ™’
1 gime Divi i \ (TDD):
the same frequency is used for both uplink and downlink
. WCDMA provides significant flexibility
oom does no need base station timing synchronization
data rates The flexibility necessitates =
z 0 rovide support7 of multiple users at independent
wiz" of multiple complex waveforms for validation and teat
3G CDMA 2000
l evolution of 1-95 (cdma One) incudes
e Division Multiple Access 2000 is the natura
ability
jaaitional functionality that increases its spectral efficiency and data rate cap re defined with
hnology where channels 4
code pivision Multiple Access is a mobile digital radio tec
codes (PN Sequences), hones
ult ane ous tra nsm itt ers on the sam e fre que ncy channel. Since More P
cpMA permits many sim ic advantage
by few er cell site s, CD MA -ba sed standards have a significant e« onom
can be served
over TDMA or FDMA-based standards of US and is
mmunications Industry Associaton (TIA)
, This standard is being developed by Teleco RTT COMA 2009 TEV
2000 standards are: CDMA 2000 1x
standardized by 3GPP2, The main CDMA
DV.
and CDMA 2000 EV-
cpMa 2000 1xRTT: o
nds for Rad io Tra nsm iss ion Tec hno log y and the des ign ation “1x” meaning 1 imes Radi
pit sta
dwidth as 1S-95.The main features of CDMA
qransmission Technology”, indicates the same RF ban
2000 1X are as follows: icas
por ts an ins tan tan eou s dat a rat e up to 307 Kbp s for a u: ser in packet mode and a typ
4, Sup
ing on the number of user, the velocity of user anc
throughput rates of 144 Kbps per user, depend
the propagating conditions.
the 2G CDMA Standard.
2, Supports up to twice as many voice users a
es the standb y time for longer lasting battery
3, Provides the subscriber unit with up to two tim
CDMA 2000 EV:
the following characteristics:
* Thisis an evolutionary advancement of CDMA with
lling radio channels with data only (CDMA 2000
4, Provides CDMA carriers with the options of insta
V)
EV-DO) and with data and voice (CDMA 2000 EV-D
2.4 Mbps of instantaneous high speed p
2, The CDMA 2000 1xEV-DO supports greater than and Ly
ch annel, although the user data rates are much lower
throughput per user on a CDMA
dependent on other factors.
144 Kbps with about twice as many voice ch:
3, CDMA 2000 EV-DV can offer data rates up to
as IS-95B.
CDMA 2000 3x:
* Itis (also known as EV-DO Rev B) isa multi-carrier evolution. It has higher rates per carrier (up to 4.9
P Mbps on the downlink per carrier).
of 14.7 Mbps. Higher rates are
Typical deployments are expected to include 3 Carriers for a peak rate
Possible by bundling multiple channels together. It enhances the user experience and enables new
Services such as high definition video streaming.
Uses statistical multiplexing across channels to further reduce latency, enhancing the experience
for latency-sensitive services such as gaming, video telephony, remote console sessions and web
browsing,
