Introducing Breezenet B; Table 1-1: Frequency Bands - Alvarion BreezeNET B System Manual

Chapter 1 - System Description
1.1

Introducing BreezeNET B

BreezeNET B is a high performance wireless bridge system that provides high-
capacity, high-speed point-to-point links. The BreezeNET B system utilizes
advanced technologies to support optimal performance in spectrally polluted
environments. BreezeNET B products operate in Time Division Duplex (TDD)
mode, using Orthogonal Frequency Division Multiplexing (OFDM) modulation
with Forward Error Correction (FEC) coding. Using the enhanced multi-path
resistance capabilities of OFDM modem technology, BreezeNET B enables
operation in near and non-line-of-sight (NLOS) environments. These qualities
enable service providers to reach a previously inaccessible and broader segment
of the subscriber population. The system also features adaptive modulation for
automatic selection of modulation schemes, including BPSK, QPSK, 16 and 64
QAM to maximize data rate and improve spectral efficiency.
Where allowed by applicable radio regulations, BreezeNET B supports the use of
40 MHz frequency channels. When using 40 MHz (instead of 20 MHz) the
BreezeNET B is operating in the "Turbo Mode". The use of this "Turbo Mode"
increases the net throughput of the BreezeNET B link, especially for links that
suffer from low net throughput due to challenging link budget conditions that
result from very long link distances, RF absorbing terrain or non line of sight.
Alternatively, the Turbo Mode can extend the range of the BreezeNET B while the
capacity is maintained constant.
BreezeNET B supports sensitive applications through optional use of
authentication and/or data encryption utilizing WEP or AES algorithm with 128-
bit keys. The system supports Virtual LANs based on IEEE 802.1Q, enabling
secure operation and Virtual Private Network (VPN) services and enabling tele-
workers or remote offices to conveniently access their enterprise network.
BreezeNET B products are currently available in the following frequency bands:
Band
5.2
5.3
5.4
5.8
The available frequencies, as well as other parameters, depend on applicable local
regulations. The actual operating frequencies used by the system can be
2

Table 1-1: Frequency Bands

Frequencies (GHz)
5.150 – 5.350
5.250 – 5.350
5.470 – 5.725
5.725 – 5.850
BreezeNET B System Manual