CI Wireless CDR801, Руководство оператора

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CI Wireless Inc. General Information
MirrorCell Select CDR812 Manual
Rev. X1 1-1
1 GENERAL INFORMATION
The CDR812 is a channel-selective CDMA repeater, designed to be fully compliant with
TIA/EIA/IS-95, titled “Mobile Station-Base Station Compatibility Standard for Dual
Wideband Spread Spectrum Cellular System” specifications. Separate modules are used
for each channel in both the transmit and receive directions. Each module selects a
channel in a given direction (transmit or receive) and amplifies it. Standard forward path
output power is 5W (37 dBm) per channel for two-channel system. Reverse path output
power is 0.25W (24dBm) per channel for two-channel system.
The repeater is outfitted with two channels for each radio frequency path. The frequency
and amplification of each channel can be individually controlled. The monitoring and
control of the system occurs with a direct connection to a laptop computer or via a
wireline option for remote access by modem.
Figure 1. Block Diagram of the CDR812 repeater.
The CDR812 consists of several modules: the duplexer, LNA (Low Noise Amplifier),
Channel Module (also known as Channelizer), and Power Amplifier. The reverse and
forward directions consist of similar modules.
The primary frequency stabilization for the CDR812 CDMA repeater is provided by the 10
MHz temperature stabilized crystal oscillator, which provides a temperature compensated
basic reference frequency for the PLL that provides the local oscillator frequency. The
basic settable frequency accuracy is 5 ppm. All internally generated frequencies are
Donor
Antenna
Duplexer Duplexer
Syn.
Osc.
Syn.
Mixer Mixer
SAW Filter
Ch. 1
Syn.
Osc.
Syn.
Mixer Mixer
SAW Filter
LNA
2 : 1
Power
Amplifier
Ch. 2
Reverse
Channels
Ch. 1 LNA
Forward
Channels
2 : 1
Ch. 2
Server
Antenna
Channel Module