Figure 1From: Bounds on the capacity regions of half-duplex Gaussian MIMO relay channels Half-duplex MIMO two-way relay channel. (a) Phase 1: node 1 transmits to node 2 and relay. (b) Phase 2: node 2 transmits to node 1 and relay. (c) Phase 3: node 1 and node 2 transmit to relay. (d) Phase 4: relay transmits to node 1 and node 2. (e) Phase 5: relay and node 2 transmit to node 1. (f) Phase 6: relay and node 1 transmit to node 2.Back to article page