User's Manual

EMS Wireless Operator’s Manual
MirrorCell II CDM 812, CDM1912 Series
608112-1, Rev C
14
Additionally, it can be configured with a variety of bandpass filters, so it can be band or
channel selective. For example, the repeater can pass just one channel, a few
adjacent channels (i.e. approximately 4.5 MHz for 3 adjacent CDMA channels), or a full
15 MHz PCS band. This gives the carrier great flexibility to choose exactly which
signals are repeated. For even more flexibility, two separate (non-adjacent)
passbands within the same 800 or 1900 MHz band may be specified. For example, at
1900 MHz, E Band (UL: 1885 - 1890 MHz) and C2 Band (UL: 1895 - 1902.5 MHz)
can be repeated using one MirrorCell II
TM
. At 800 MHz, one repeater can pass the A
and A’’ sub-bands (UL: 824 - 835 MHz), and also pass the A’ sub-band (UL: 845.0 -
846.5 MHz), while rejecting the competitor’s B sub-band (UL: 835 - 845 MHz).
Line of Sight to
nearby BTS
MirrorCell II Repeater
Donor Antenna,
typically parabolic
dish, 25 dBi gain
Server Antenna,
typically base station
panel design, 17 dBi
gain @ 1900 MHz
-53 dBm
+39 dBm (Gain = 92
dB)
-51 dBm
-76 dBm received
signal level
Coverage Area
7/8" Coax Cable, 2 dB
loss @ 1900 MHz
+55 dBi ERP
(including 1 dB cable
loss)
Figure 2: Typical Outdoor MirrorCell

II Repeater System Design