Vanu Inc. 0PW1P0010 用户手册
Vanu Software Radio GSM Base Station
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The Vanu Software Radio base station is composed of four major subsystems:
•
RF front end, supporting either the 800MHZ cellular band or the 1900 MHz PCS band
•
Analog-to-Digital and Digital-to-Analog conversion
•
Signal Processing
•
Back end network connectivity
Vanu, Inc. integrates these subsystems, running its software on top of the COTS hardware that comprises
a complete radio access network, including the traditional functionality of the BTS, TRAU and BSC.
2. BTS Sites
The Vanu Software Radio BTS implements all of the signal processing required to implement full GSM
basestation functionality in software running on a server. A standard system implements the components
of GSM Phase II for voice communications. It supports mobile phones operating in enciphered mode
using the full-rate (GSM 6.10) vocoders.
BTS Site
PA
BTS
Router
RF Front End
GPS Source
Figure 2: BTS with Protium Site
The Vanu BTS is complemented by a Protium Technologies RF subsystem. A 25-MHz frequency band is
digitized and transmitted between the two units.