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运用通信的纠错编码和调制理论定量分析了“压缩频带的高速数据传输”信道单元、Turbo码编码器和译码器 ,并给出了原理图 .指出Turbo码虽然纠错能力强 ,在小信噪比、多衰落的无线数字通信系统中 ,对提高通信系统的抗干扰和可靠性起着重要的作用 ,但译码延时大 ,而且在具体实现过程中还有一些问题需要解决 ,如选择哪种SISO译码算法 ;采用何种硬件 (芯片 )以保证在规定的译码处理时间内完成所有的算法运算等
The paper uses the error correction coding and modulation theory of communication to quantitatively analyze the channel unit of high speed data transmission in compressed frequency band, Turbo code encoder and decoder, and gives the principle diagram.It is pointed out that Turbo codes have good error correction ability, Signal to noise ratio, multi-fading wireless digital communication system plays an important role in improving the anti-interference and reliability of the communication system, but the decoding delay is large, and there are some problems to be solved in the concrete realization process, such as Which SISO decoding algorithm to choose; what kind of hardware (chip) to use to ensure that all arithmetic operations, etc., are completed within the specified decoding processing time