User's Manual

CPE-O-R-WS User Manual
6 Runcom Technologies Ltd.
2.1.2 TVWS Interface Specification
Table 2: TVWS Interface Specifications
Frequency Bands
470-698MHz
Radio Access
802.16e Wave 2
Operation Mode
TDD
Channel Bandwidth
6 MHz
Output Power
24 dBm at antenna port
Modulation
QPSK, 16QAM, 64QAM for DL and QPSK, 16QAM for UL
FFT
512 FFT points
FEC
Convolution Code and Turbo Code
Authentication
TTLS and TLS
2.1.3 Operational Description
The CPE-O-RS-WS is operated as part of a TVWS Network. The CPE is used to provide connectivity
(Internet Access) to users using Broadband Wireless Access based on WiMAX technology.
The TVWS Network uses the TV White Space spectrum (470-698 MHz) in channels that are not used by
licensed or protected users such as broadcasters and wireless microphones.
The CPEs are wirelessly connected to Base Stations (RNU4000-BTS) that are usually installed in high
places such as tower, water tanks , rooftops, etc. and from the Base Stations the communication is relayed
to the Internet cloud via a gateway/router ( Micronoc, CompactNOC, ASN Gateway, etc.). The CPE is
connected through the Base Stations to the Automatic Frequency Allocation Software (AFAS) in order to
receive the available TVWS channels from the TVWS Data Base. The CPE will only transmit after it is
synchronized to the Base Station on a channel allocated by the TVWS Data Base via the AFAS SW
The CPE uses OFDMA technology in TDD (Time Division Duplexing) mode with adaptive modulation in
order to provide a reliable connectivity, the CPE modulation will change automatically according to the
link budget between the CPE and the Base Station. The available modulation levels are described in Table
2 above.
The CPE will adapt automatically its output power level according to the link budget between the CPE
and the Base Station in order to reduce self-interference. In addition the CPE is GPS synchronized with
the Base Station and other CPE’s in the area connected to the same TVWS Network in such a way that all
CPE’s will transmit and receive at the same time, the GPS synchronization mitigates the self-interference
between the CPE’s in the same network
The CPE can be connected at the customer’s premises via POE to any IP device that needs Internet
connectivity such as Wi-Fi routers, laptop/desktop computers, IP switches, etc.