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    초록·키워드

    Adaptive array antennas (AAs) and interference cancellers (ICs) have been studied as techniques to suppress multi-user interference and increase the channel capacity of DS-CDMA (direct sequence code division multiple access) mobile communication systems. In this paper, we propose a new type of interference canceller that uses an adaptive array antenna (ICAA), which benefits from the advantages of both technologies. Furthermore, we also propose a structure in which this technique is applied only to high data rate users in a base station (partial canceller). In combination with a closed-loop transmission power control (TPC) based on signal-to-interference plus noise ratio (SINR) measurement, this technology results in the reduction of interference power to other channels. The simulation results show that the partial canceller is effective in decreasing the transmission power of high data rate users and is also effective in increasing the channel capacity of low data rate users.

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      UCI(KEPA) : I410-ECN-0101-2009-569-013229302