Chapter 10 Cooperation Link Level Retransmission in Wireless Networks M. Dianati, X. Shen, and K. Naik. Scope. Link and MAC layer for fading channels. Two parts: Cooperative Scheduling Cooperative ARQ. Introduction. Sample fading process. Challenges in wireless domain: Fading
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Chapter 10Cooperation Link Level Retransmission in Wireless NetworksM. Dianati, X. Shen, and K. Naik
Sample fading process
Power spectrum density
Complex envelope of
Power spectrum density:
Fading process is a non-white stochastic process with relatively slow variations.
Negative or positive ACK
1. It has correctly received the previously transmitted frame
2. Its channel to the receiver node is in good condition.
O(k): Status of the protocol at discrete time k
P(k): Status of the primary channel
N(k): Status of the super node
G: Good state
B: Bad state
C: Cooperative state
NC: Non Cooperative state
Normalized inverse fading margin: