Hybrid Transmission for Correlated MIMO Relay Channels

To improve the capacity of a correlated MIMO channel, we propose a hybrid transmission (HT) scheme that mixes half-duplex decode-and-forward relaying transmission with direct transmission (DT). Precoding and decoding schemes are considered to convert the original relay channel into several parallel subchannels so that resource allocation can be easily performed. Simulation results show that significant capacity gain can be achieved by the HT scheme compared to the DT scheme.