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Cooperative Transmission Techniques
Communication networks typically enforce the constraint of having a single origin for each message, which can be the original source or a relay. In both wired and wireless media, the concept of “Switching” or “Routing” information among relays can be generalized. In wired networks, Network Coding introduced by Ashwlede et al generalizes routing: relays do not transmit one packet from one source but a linear combination of packets. In wireless networks the medium linearly adds several signals on its own. Rather then alternating the use of the transmission resources (i.e. contending for the medium) nodes should cooperate in coding the same message.
Our research focuses on finding decentralized, low complexity protocols to harvest spatial diversity in wireless media using transmitter cooperation methods that do not require a centralized coding assignment policy and that provide atradeoff between performance and complexity that can be used to meet the desired architectural goals depending on the application. In addition to the design we have studied the dynamics of cooperative methods in dense networks.
- Sub-categories in this topic are -
- Performance analysis of cooperative techniques
- Decentralized protocols for cooperative transmission
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