| Summary: | 碩士 === 國立臺灣科技大學 === 電機工程系 === 97 === This dissertation, we assume channel state information (CSI) is unknown to both transmitter and receiver, consider non-coherent space-time modulation in single-carrier block system over quasi-static frequency-selective fading channel. Indeed, capitalizing on multi-channel input-output relation in time domain, we construct space-time codes of constant signaling amplitude by means of complex orthogonal sequences to achieve maximal diversity gain along with coding advantage. Later, we will combine this design code with Relay-assisted cooperative communication and amplify-and-forward strategy is employed. We consider a single-relay scenario where the source-to-relay, relay-to-destination, and source-to-destination links experience possibly different frequency-selective channels. Under the assumption of perfect power control for the relay terminal and high signal-to-noise ratio for the underlying links, our analysis are able to achieve a maximum diversity gain and coding gain. Single-carrier block system can additionally make us not to suffer from high peak-to-average power ratio (PAPR). An extensive Monte Carlo simulation study will show different simulation results under different frequency-selective channels and coding design.
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