Abstract
该文提出了一种噪声归一化合并(NNC)差分跳频(DFH)接收机模型以提高差分跳频系统抗部分频带干扰能力。给出了Nakagami衰落信道下NNC-DFH接收机在部分频带干扰及背景热噪声下误符号率边界的闭式表达式，并采用矩生成函数法进一步求得了衰落指数m为整数时的简化性能边界。仿真结果表明：在非最坏部分频带干扰下，仅在衰落较弱且干扰能量较为分散的特殊情况下，线性合并(LC)DFH接收机性能略优于NNC-DFH接收机，其它情况下NNC-DFH接收机总是优于LC-DFH接收机，且干扰越集中性能优势越显著；在最坏部分频带干扰下，NNC-DFH接收机的抗部分频带干扰性能优于LC-DFH接收机，与信道衰落程度及干扰带宽因子取值无关。
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