用matlab打开即可，可以绘制功率谱的函数，十分方便-using Matlab can be opened, the power spectral mapping function, which is very convenient

将带发送数据序列映射为格雷码，相邻的码元只有一个符号不同。-mapping the deta serial into GeLei code,whose closed code only one symbol is different

Bit-power loading algorithms based on Effective SINR Mapping techniques. Bit-power loading algorithms based on Effective SINR Mapping techniques. -Bit-power loading algorithms based on Effective SINR Mapping techniques. Bit-power loading algorithms b