With the emergence of cooperative applications it turned out that traditional transaction concepts are not suitable for these scenarios. Isolation of transactions, as guaranteed by the ACID transaction properties, contradicts the need of cooperation between users. In this paper, we propose a cooperative activity model that provides transactional properties suitable for cooperative scenarios. Ea...

With the emergence of cooperative applications it turned out that traditional transaction concepts are not suitable for these scenarios. Isolation of transactions, as guaranteed by the ACID transaction properties, contradicts the need of cooperation between users. In this paper, we propose a cooperative activity model that provides transactional properties suitable for cooperative scenarios. Ea...

Cooperative transmission has been used to achieve diversity gain through partner to create multiple independent fading channels. It has attracted lots of research attention in recent years. An important question in cooperative communication is power allocation. Given the same total power, how much should be allocated to self-information transmission and how much to relayinginformation transmiss...