Hybrid Transmission Scheme for MIMO Relay Channels

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Executive Summary

To improve the achievable rate for the MIMO channels, the authors propose a Hybrid Transmission (HT) scheme that mixes half-duplex Decode-and-Forward cooperative relaying transmission (DFRH) with direct transmission (DT). In the HT scheme, the source message is divided into two parts: one is transmitted by DFRH scheme and another is transmitted by DT scheme. Precoding and decoding are considered to convert the original MIMO relay channel into several parallel subchannels so that resource allocation can be easily performed.

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