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为了对软件无线电进行探索性研究,本论文主要研究了软件无线电接收机中的部分关键技术:包括数字下变频算法,多通道并行接收的信道化模型以及调制解调部分的实现。
In order to make a research on the software radio, this thesis focuses on key techniques for radio receiver including: DDC technology, the channelization model, modulation and demodulation algorithm.
应用该公式分析并行宽度为4个码元,输出宽度为2个码元的解调器,并行滤波的时域截断导致的解调损失约为0。
Simulations show that for a 4-symbol parallel width 2-symbol output width demodulator, the demodulation loss caused by time domain truncation in the parallel filter is about 0.6 dB.
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