From: DF-based sum-rate optimization for multicarrier multiple access relay channel
Decoding order | Decoding order | Case | |
---|---|---|---|
at the relay | at the destination | ||
Direct transmission | N.A. | No decoding order | 1 |
The relay forwards x _{ b }[k] | x _{ b }[k] | x _{ b }[k]→x _{ a }[k] | 2 |
The relay forwards x _{ a }[k] and x _{ b }[k] | x _{ b }[k]→x _{ a }[k] | x _{ b }[k]→x _{ a }[k] | 3 |
The relay forwards x _{ a }[k] and x _{ b }[k] | x _{ a }[k]→x _{ b }[k] | x _{ b }[k]→x _{ a }[k] | 4 |
The relay forwards x _{ a }[k] | x _{ a }[k] | x _{ a }[k]→x _{ b }[k] | 5 |
The relay forwards x _{ a }[k] and x _{ b }[k] | x _{ a }[k]→x _{ b }[k] | x _{ a }[k]→x _{ b }[k] | 6 |
The relay forwards x _{ a }[k] and x _{ b }[k] | x _{ b }[k]→x _{ a }[k] | x _{ a }[k]→x _{ b }[k] | 7 |