The transmitter unit mainly consisted of differential encoding, spread spectrum and BPSK modulation and so on.
发送部分介绍了中频发送的差分编码、扩频、BPSK调制等技术；
To overcome the gap, an effective differential encoding and decoding scheme for multiband UWB systems is proposed.
为了克服这一性能差距，提出了一种有效的基于多频带uwb系统的差分编译码方案。
To overcome the gap, an effective differential encoding and decoding scheme for multiband UWB systems is proposed.
为了克服这一性能差距，提出了一种有效的基于多频带uwb系统的差分编译码方案。
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