Resource Allocation for Wireless Fading Relay Channels: Max-Min Solution

—Resource allocation is investigated for fading relay channels under separate power constraints at the source and relay nodes. As a basic information-theoretic model for fading relay channels, the parallel relay channel is first studied, which consists of multiple independent three-terminal relay channels as subchannels. Lower and upper bounds on the capacity are derived, and are shown to match, and thus establish the capacity for the parallel relay channel with degraded subchannels. This capacity theorem is further demonstrated via the Gaussian parallel relay channel with degraded subchannels, for which the synchronized and asynchronized capacities are obtained. The capacity-achieving power allocation at the source and relay nodes among the subchannels is partially characterized for the synchronized case and fully characterized for the asynchronized case. The fading relay channel is then studied, which is based on the three-terminal relay channel with each communication link being ...

• Type: Journal
• Year: 2007
• Where: CORR
• Authors: Yingbin Liang, Venugopal V. Veeravalli, H. Vincent Poor
• Keywords: CORR 2007, Education, Parallel Relay, Relay, Relay Channels