EH type | Transmission mode | CSI requirements | Channel information |
---|---|---|---|
Single antennas | Instantaneous | High | |h i |2, |g i |2, |f i |2 |
Single antennas | Delay-constrained | Medium | |h i |2, and distributions of |g i |2, |f i |2 |
Dual antennas | Instantaneous | High | |h i |2,|k i |2, |g i |2, |f i |2 |
Dual antennas | Delay-constrained | Medium | |h i |2,|k i |2, and distributions of |g i |2, |f i |2 |