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Turbo码是一种具有接近Shannon编码理论极限性能的并行级连码。阐述了一种性能极为优越的低速率超正交Turbo码,它以带宽为代价,在高斯及衰落信道中的性能均优于普通的Tur-bo码,因此适用于扩频通信的CDMA系统。最后给出了仿真结果。
Turbo code is a parallel concatenated code with the performance close to Shannon coding theory. This paper describes a very superior performance of low-rate ultra-orthogonal Turbo code, which at the expense of bandwidth, Gaussian and fading channels in the performance are better than the ordinary Turbo code, and therefore suitable for CDMA systems spread spectrum communications. Finally, the simulation results are given.