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    초록·키워드

    A decision-directed carrier phase recovery scheme has an efficient structure to estimate and to correct the frequency and phase offsets caused by doppler frequency, and by the frequency deviation by the oscillators used in transmitters and receivers. Since the estimation is performed in complex domain from the baseband signal in the scheme, it has fast acquisition performance, unlike the conventional PLL. This merit makes it applicable for the receivers for various wireless communications such as satellite communications, wireless local area networks (LANs), wireless asynchronous transfer mode (ATM) transmission and local multipoint distribution service (LMDS) that need high-speed burst signal communications. We analyze the performance of the carrier recovery scheme including angular frequency and phase estimators by analytical methods for the AR-filter model, and compare to the simulation results. The results can be utilized in designing of the filters that play a role to suppress the noise in the carrier recover loop.

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      UCI(KEPA) : I410-ECN-0101-2009-569-013223239