| Summary: | 碩士 === 國立中央大學 === 通訊工程學系 === 105 === Wireless communications is required to transmit quantity of data more and more. An important studying topic is how to transmit the same quantity of data in a shorter period of time. Recently, two-way relaying is a popular subject, where two terminal nodes transmit to each other with the help of the relay node. Two-phase two-way relaying
(TPTWR) using physical-layer coding is a bandwidth efficient technique. Several TPTWR schemes using differ-ential phase-shift keying (DPSK) which avoid the rate loss due to pilot symbols were proposed.
In this thesis, we first discuss and compare several amplify-and-forward (AF) schemes and decode-and-forward (DF) schemes with single relay. For AF schemes, we indicate the difference of amplify factor in two definitions. For DF schemes, we indicate that if both
terminal nodes use the same signal constellation, except BPSK, the relay is not able to detect data symbols by non-coherent detection. Hence, we propose several DPSK schemes for TPTWR which provide a tradeoff between error performance and data rate. Finally, error performances of the proposed schemes are verified by computer simulations.
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