Abstract
In order to expand a capacity of mobile relay FPUs, the authors have been researching a 4x4 TDD-SVD-MIMO system with adaptive transmission control which changes beam-forming weights and modulation schemes in accordance with channel conditions. We prototyped a proposed system and evaluated its transmission performance by indoor experiment using a fading simulator. The result showed that our prototype system achieved a BER performance with degradation less than about 2 dB from that of computer simulations and demonstrated the proposed technique in actual hardware.