Filter
Top Products
GDK-20W DIGITAL WIRELESS KEY TELEPHONE SYSTEM
50
corridor
corrido
r
BS
Figure 3.6.12 Maximizing Line of Sight
Fading
Fading refers to the attenuation caused when a signal is reflected and receiving antenna receives multiple
instances of the signal. A direct signal is always stronger than a reflected signal.
Base station is designed with two antennas and the capacity to choose the best suited antenna for carrying
the strongest signal. This design minimizes chances of fading.
Although signals can travel around corners, you should place base stations so that signals begin their paths
with a clear line of sight as illustrated in Figure 3.6.12 and then bend to travel to a receiving antenna. It limits
the effect of signal fading.
Shadowing of the radio signal
The following items may well cause shadowing of the radio signal:
z Thickness of walls, especially cavity walls and reinforced concrete walls.
z Windows or glass in doors with steel wire reinforcement or metallic reflection film.
z Steel doors, lift shafts, partitions or walls.
z Fire resistant doors
z A wall of steel cabinets, large computer equipment or machinery.
z Thickness of concrete floors.
Traffic Guidelines
Each base station supports four simultaneous calls, but because all users are not simultaneously in call
statistically, a base station can support a greater number of wireless terminal users in practice.
Number of Cell
(Base station)
Recommended Number
of Registered Wireless
Terminals
Number of maximum
Simultaneous Wireless
Conversation
1 4
2 8
3
20
12
[Table 3.6.3] Suitable Wireless Terminal Number according to Base Station Number