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为了获得数据传输速率和可靠性之间的折衷,提出一种实现简单的发射接收方案,将空间分集和空间复用结合起来,形成混合STBC-VBLAST结构的多天线系统(MIMO)。根据无线信道时变特性,利用等效传输矩阵的正交性特点,自适应调整发射天线在混合发射结构中的排列方式,并且在接收端配合使用基于正交分解的译码算法,进一步降低误码率(BER)。通过与原混合结构BER曲线的比较,验证所提出方案的优越性。
In order to obtain a compromise between data transmission rate and reliability, a simple transmission and reception scheme is proposed, which combines spatial diversity and spatial multiplexing to form a multi-antenna system (MIMO) with a hybrid STBC-VBLAST architecture. According to the time-varying characteristics of the wireless channel, the orthogonality of the equivalent transmission matrix is used to adaptively adjust the arrangement of the transmitting antennas in the hybrid transmitting structure, and the decoding algorithm based on the orthogonal decomposition is used at the receiving end to further reduce errors Bit rate (BER). Compared with the BER curve of the original hybrid structure, the superiority of the proposed scheme is verified.