软扩频技术(Tamed Spread Spectrum)，又称缓扩频。它是进行频谱的某种缓慢变化,是从直接序列扩频技术与编码技术相结合而发展来的一种新型的基带扩频技术, 也是当前应用较多的一种扩频技术。
软扩频技术 tamed spread spectrum
The design of a direct sequence soft spread spectrum de-modulator based on SAW technology is reported in this paper. The experimental results are also given.
报道了一种直接序列软扩频调制解调器的 SAW实现方案 ,并给出了相应的实验结果。
参考来源 - SAW软扩频调制解调器的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
以32位的循环码移位键控（CCSK）码字S0为基础建立扩频空间，完成软扩频；
By using 32 bit Cyclic Code Shift Keying(CCSK) code-word S0 to establish spread spectrum space, the tamed spread spectrum was completed.
基于双多进值正交扩频系统非相干解调的硬判决信息不利于软输入软输出译码，提出了一种新型软判决信息提取算法。
This paper presented a novel decision scheme with soft output for SISO decoding when noncoherent receiver for dual M-ray orthogonal spreading symbols is employed.
介绍了基于NIOS II软核处理器的SOPC技术，分析了传统方法和基于SOPC技术的方法实现扩频收发机的优劣，详细说明了嵌有双nios II的SOPC技术的方案设计。
Introduce the technique of SOPC with softcore processor NIOS II. Analyze the traditional design and the SOPC design in a Direction-Sequence Spread-Spectrum Receiver and Transmitter system.
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