2. Signal Strength
2
•Cellular systems depend on the radio signals received by a MS
throughout the cell and on the contours of signal strength emanating
from the BSs of two adjacent cells i and j, as illustrated in Figure
3. 3
Fig 3 Received signal strength indicating actual cell tiling.
•It is clear that signal strength goes down as one move away
from the BS.
•The variation of received power as a function of distance is
given in fig
Signal Strength
4. Fig. Variation of received power from a base station
Received power P ( x )
•As the MS moves away from the BS of the cell, the signal
strength weakens, and at some point a phenomenon known as
handoff occurs (handoff is also written as hand-off or hand off,
and known as handover outside North America).
•This implies a radio connection to another adjacent cell. This is
illustrated in Figure 5, as the MS moves away from cell i and
gets closer to cell j.
Signal Strength
