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基于千兆以太网(GE)交换的无线传输平台结构较之传统软件无线电平台具有强大的可编程能力和良好的可扩展性,配合多入多出-正交频分复用(MIMO-OFDM)技术,可实现达到1 Gb/s吞吐率(Gbps)的无线传输系统,针对Gbps高速无线传输的需求与平台特性,提出了一种自动重传请求(ARQ)机制,结合平台的结构特点,针对系统需求,在保证无线传输可靠性的前提下减小ARQ机制对传输吞吐率的开销,并可通过参数的优化适应于不同的应用场景。
Compared with the traditional software radio platform, the structure of the wireless transmission platform based on Gigabit Ethernet (GE) exchange has strong programmability and good scalability. With the multi-input-multiple-output-orthogonal frequency division multiplexing (MIMO-OFDM) Technology to achieve a 1 Gb / s throughput (Gbps) wireless transmission system. According to the requirements and platform characteristics of Gbps high-speed wireless transmission, an automatic repeat request (ARQ) mechanism is proposed. Combining the structural features of the platform, System requirements, reduce the transmission overhead of the ARQ mechanism under the premise of ensuring wireless transmission reliability, and can be adapted to different application scenarios through parameter optimization.