Scheme | Proposed | Ref. [11] |
Transmission efficiency | 1/2 symbol/antenna/time slot | 3/22 symbol/antenna/time slot |
Diversity gain | 2 | 2 |
Feedback | No | Local CSI |
Unidirectional cooperative link | No | Transmit two complex number |
Decoding complexity | Proportional to the square of modulation order | Proportional to the modulation order |