1. Is it used in 4G technology? If so, what is its application there?
2. Will it be used in 5G?
here some information
http://ieeexplore.ieee.org/abstract/document/8114547/
cooperative wireless communications is the cooperation of of more than wireless link to service one or more users at the overlapp regions of these links and thereby enhancing the bit rates delivered to such boundary users.
For example two or three base stations can serve simultaneous on user in the overlap area the cells. If all cooperative links send the same data then, the system will be build some form of transmit antenna diversity. If the cooperating links transmit different data, it forms a space diversity of multicell MIMO.
The paper brought by Zeyad reviews the different configurations of the cooperative wireless links. But one put in mind that control on the wireless links gets more complicated to set up the cooperation sessions.
Best wishes
1. significantly it used for performance improvements in wireless communication systems
2. Is it used in 4G and 5G technology.
3. To support multiple antennas due to size, cost, and/or hardware limitations in the networks.
4. It also involves multiple point-to-point radio links, including links within a virtual array and different virtual arrays.
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