In the network planning of a service area, the coverage estimation through the link budget requires 100 stations. The capacity estimation needs 50 stations, so the capacity and coverage requirements of the service area are finally met. How many stations are needed?

SFBC is a transmit diversity technique that mainly obtains transmit diversity gain for areas with low SINR, such as cell edges. Compared to STBC, SFBC is a space-frequency two-dimensional transmit diversity, while STBC is a space-time two-dimensional transmit diversity.

Regarding the re-election of the community, which of the following statements are correct? (Multiple choice)

About TDD and FDD contrast description, which is correct?

A CCE (control channel element, control channel element) is composed of several REG (resource element group, resource particle group)?