Andrew Wireless Innovations Group M17P26 Manuel D’Utilisation

 

 
Cellular telephone systems transmit signals in two directions between base 
transceiver station (BTS) and mobile stations (MS) within the signal coverage area. 
 
If weak signal transmissions occur within the coverage area because of indoor 
applications, topological conditions or distance from the transmitter, extension of the 
transmission range can be achieved by means of an optical distribution system. 
 
Such a system contains an optical Master Unit and several Remote Units. The 
number of the Remote Units depends on the hardware and software configuration. 
The Remote Units are connected to the Master Unit with optical links. The optical 
loss must be less than 10 dB inclusive optical couplers or splitters. 
 
The Master Unit is the connection to the base transceiver stations. The configuration 
of a Master Unit depends on the number of the Remote Units and the frequency 
range.  
 
WDM (Wave Division Multiplex) filters are integrated in the optical modules. For the 
UL, a wavelength within 1540 nm – 1562 nm is used. For the DL, a wavelength of 
1310 ±20 nm is used. The maximum output power for the UL and DL is 5.7 mW. 
 

 
The 

ION-M17P/26 EU

 

(Intelligent Optical Network; MMR) 

is a high-power dual-band 

Extension Unit (EU). It is used in conjunction with a Master Unit 

and a Main Unit 

containing the optical transceiver (OTRx) 

in the ION-M optical distribution system. 

This system is able to transport the whole AWS 1700 MHz band wide 
simultaneously, providing a cost-effective solution for distributing capacity from one 
or more base stations. Optionally, for 2600 MHz WiMAX in TDD * mode is available. 
 
The ION-M17P/26 EU is connected via extension cable bridge to the Main Unit with 
extension port. For a frequency band extension, the additional band (for ION-M17P 
EU this is AWS) has just to be combined with the signal for the (Main) Remote Unit. 
Then, the additional band is available on the extension port of the Main Unit.  
 

The ION-M17P/26 EU transports signals on the RF layer in a very inexpensive 
manner. This means that services from various operators can be transmitted 
simultaneously from a cluster of base stations to a remote location over the same 
fibre.

 

 
Any service or frequency band extension is achieved by adding an Extension Unit 
(EU) without any impact to the installed network.  
 

* 

TDD is the abbrev. of time-division-duplex