Mode Perimeter Only
D
D, x, y, AC, P C A y B x D, x, -, xA, P
168
A Nastier Example
D
D
x
x
169
Review Session
Format
Closed book, closed note, no "google"
5 problems
"fill in the blank" type and regular problems
Difficulty
Less than homework problems
170
Scope
General knowledge in wireless systems e.g., what does DSSS stand for? what is the advantage of DSSS? Physical layer
Understanding the difference between large-scale fading and small-scale fading. Understanding models for large-scale fading & small-scale fading, e.g. freespace model, two-ray ground model, log-normal fading, Rayleigh fading. Ability to compute the probability of successful delivery given the transmission power and fading model.
MAC
Understanding the difference among 1-persistent, non-persistent and ppersistent CSMA Understanding the medium access scheme (state diagram, IFS etc.) and frame types in IEEE 802.11 DCF of Understanding the hidden & exposed terminal problems
Routing
Ability to use Dijkstra and Bellman-ford algorithm to compute the shortest path between any two pair in the network. Understanding how DSDV, DSR, AODV, GPSR work, message format, state information maintained, message complexity.
171
Homework 1
X is Gaussian (0, 1) P(X > z) = Q(z) = 0.99
Q( z ) =
z
1 e 2
z 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 1.9
- y2 2
Q(-z) = 1 Q(z)
dy
Q(z) 0.15866 0.13567 0.11507 0.09680 0.08076 0.06681 0.05480 0.04457 0.03593 0.02872 z
Q(0) = 1/2
Q(z) 0.0...