User's Manual

13
DragonWave Inc. Overview
• requirement of minimized footprint and power consumption (under 17 W) with green
design;
• support of adaptive noise immunity (ANI).
2.1 Available Bandwidth and Modulation
Lite product family supports the following frequency bands:
• 4.9 ~ 5.8 GHz (5 GHz);
• 3.4 ~ 3.8 GHz (3 GHz);
• 2.3 ~ 2.7 GHz (2 GHz).
Lite supports modulation schema BPSK, QPSK, 16 QAM and forwards error correction
coding with rates of 1/2, 2/3, 3/4 and 5/6. 20 MHz and 40 MHz channel spacings are
supported. See 7.2.
2.2 Applications
2.2.1 Small Cell Backhaul in Non-line-of-sight (NLOS) Environment
Many types of radio transmission depend, to varying degrees, on line of sight (LOS)
between the transmitter and receiver. Small cell backhaul is changing this rule of game.
Most small cells are installed of light poles of on the walls of buildings in urban areas and
inevitably encounter obstructions such as trees, street curves and buildings between the
endpoints of the backhaul links.The non-line-of-sight (NLOS) capability of Lite ideally
suites itself in this environment because it operates at the frequency lower than 6 GHz.
Furthermore, by supporting both licensed and unlicensed spectrum, Lite allows opera-
tors to select a spectrum strategy that best meets their requirements.
This wireless backhaul solution delivers significant total cost of ownership (TCO)
improvements over existing macro-cell backhaul solutions, allowing operators to expand
their networks cost-effectively.
Lite can be deployed using a tree topology (Figure 4), with macro-cell traffic aggregation
points on rooftops, and tail, chain or small hub microsites at street level. This architec-
ture provides:
• Less network interference than point-to-multipoint system due to the use of directive
antennas;
• Simple network connectivity and reliable path planning.
• An evolution path towards protected network architecture.