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In this work, we study the finite-user stability region of a slotted ALOHA random access network with cooperative users. The network consists of multiple cooperating pairs where the users in each pair is allowed to cooperate by relaying each others' messages to the access point (AP). Spatial diversity gains are achieved since the packet of a cooperative user can be transmitted through independent...
The stability region of the two-user slotted ALOHA system is analyzed under two scenarios: the case with channel- aware transmission control and the case with user cooperation. By exploiting these advantages in the physical layer, we show that the system throughput can be significantly increased with cross- layered designs on the medium access control (MAC) protocol that take into consideration the...
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