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OFDM是一种无线环境下的高速传输技术,适合高速数据传输。自适应OFDM调制解调根据信道估计的结果对比特与功率进行动态分配以达到充分利用频带资源、提高系统整体性能的目的。本文对OFDM自适应调制解调的基本原理及其相关技术进行了分析。
OFDM is a high-speed transmission technology in wireless environment, suitable for high-speed data transmission. Adaptive OFDM modulation and demodulation according to the channel estimation results of the dynamic allocation of bits and power in order to achieve full use of bandwidth resources and improve the overall performance of the system. This paper analyzes the basic principle of OFDM adaptive modulation and demodulation and its related technologies.