摘要(英) |
In recent years, MIMO (Multi-Input Multi Output) has become a significant system. MIMO techniques bring many benefits to communication system, such as higher throughput and reliability. However, more different configurations of antennas between transceivers and receivers, there are a few issues to be solved. In this thesis, Indoor VLC MIMO system is investigated. At first, difference between normal MIMO wireless system and Indoor VLC MIMO system is discussed. Then, SVD (Singular Value Decomposition) technique is presented, which is a common used technique for precoding. In order to increase the flexibility, the block diagonalization precoding is employed to support Multi-user. This thesis proposes a reconfigurable architecture which can compute SVD for 2x2 for four users, 4x4 for two users, 8x8 for one user. This design archives low area and low power. The proposed architecture is implemented with TSMC-40nm technology. Finally, we compare with the literature, we can find the propose architecture brings high power efficiency. |
參考文獻 |
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