说明：  平方根升余弦脉冲 平方根升余弦脉冲 平方根升余弦脉冲 平方根升余弦脉冲 平方根升余弦脉冲 平方根升余弦脉冲 平方根升余弦脉冲
(Square Root Raised Cosine Square Root Raised Cosine pulse Pulse Pulse square root raised cosine square root raised cosine square root raised cosine pulse Pulse Pulse square root raised cosine square root raised cosine pulse)