전송 안테나 및 성상도 선택과 전력 할당을 적용한 MIMO 다중 사용자 시스템의 성능분석

초록

In this paper, we suggest the scheme combining long-term feedback and short-term feedback in MIMO multi-user system and analyze its system performance. At the beginning of communication, long-term feedback is fed back to transmitter such as the number of active antennas, constellations, and transmission powers which are determined to satisfy the given target symbol error and target data rate for each user. After this, short-term feedback of active antenna index is fed back periodically. Simulation results show the proposed scheme outperforms better than l ong-term feedback or short-term feedback information scheme.

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