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采用自主搭建的信道测量平台测得了机舱环境下分布式MIMO系统的信道冲击响应矩阵。根据实测的信道矩阵分别计算了4种具有不同收发天线数目的分布式MIMO系统的信道容量。为了便于比较,SISO系统的信道容量也通过实测数据进行了计算。计算结果表明:在机舱环境下,采用分布式MIMO系统和采用SISO系统相比能够显著提高系统信道容量,说明分布式MIMO系统可以充分满足未来机舱内无线通信高速率数据传输的需求。
The channel impulse response matrix of distributed MIMO system in cabin environment was measured by using self-built channel measurement platform. According to the measured channel matrix, the channel capacity of four kinds of distributed MIMO systems with different numbers of transmitting and receiving antennas are respectively calculated. For the sake of comparison, the channel capacity of SISO system is also calculated from the measured data. The results show that in the cabin environment, the distributed MIMO system can significantly improve the system channel capacity compared with the SISO system, indicating that the distributed MIMO system can fully meet the requirements of high-speed data transmission of wireless communications in the future cabin.