由于Turbo码在接近Shannon极限的低信噪比下仍然能够获得较低的误码率，所以在近几年已成为编码理论界研究的热门领域，在第三代移动通信系统的开发中，Turbo码被普遍认为是高速数据信道的纠错编码方式。现在人们对Turbo码的主要研究包括编码器、交织器的设计及软输入、软输出迭代译码的算法。-This kind of codes has given rise to a large interest in the coding theory because of the can still aehieve small bit error rate at low SNR close to the Shannon capacity limits.In the development of the third generation mobile communieation systems，it is well kllown that Turbo codes are the way of correct coding of high-speeding data channel. The researeh of Turbo codes includes the design of the encoder，the illterleaver and soft-out/soft-in iterative decoding algorithm.