摘要:UF编码就是将数字基带序列变换成无符号间干扰和抖动的基带波形信号,编码后的波形在频谱上具有主瓣窄、滚降速度快的优点;但是通过这种编码后的波形在经正交调制到高频载波后将会出现大约3dB的包络起伏,使得调制信号通过非线性信道后功率谱稍有扩展,Pe性能有所恶化。本文针对3dB包络起伏的成因进行了研究,并给出在Matlab上的仿真验证结果。
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