Performance Evaluation for MIMO Multi-user system considering Selection of Transmit Antennas, Constellations and Powers allocation

초록

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