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目前随着硬件和编码技术的提升,逐渐成熟的多载波技术在通信过程中得到广泛的推广和应用。为了在较严重的多径衰落条件下获取更高的频谱利用效率,采用静态多抽头信道建模的方式对无线信号传播进行模拟。以信道冲击响应数据的误码率作为分析基础,设计了一种引进正交频分复用及多天线技术概念进行改良的多载波MFSK编码方案,并验证了在多径衰落条件下的频谱使用效率及误码率,从而证明了该方案在提高频谱效率方面的可行性。
At present, with the improvement of hardware and coding technology, the mature multi-carrier technology has been widely popularized and applied in the communication process. In order to obtain higher spectrum utilization efficiency under more severe multipath fading conditions, the wireless multi-channel modeling is adopted to simulate the wireless signal propagation. Based on the bit error rate of channel impulse response data, a multi-carrier MFSK coding scheme based on the concept of orthogonal frequency division multiplexing and multi-antenna was designed and the spectrum usage under multi-path fading was verified Efficiency and bit error rate, which proves the feasibility of this scheme in improving the spectral efficiency.