论文部分内容阅读
分析了随机交织器在Turbo 码中的重要作用,讨论了交织器的设计原则,指出在满足时延要求的前提下,交织深度应与数据帧大小相一致.在此基础上,针对加性白高斯噪声信道和Rayleigh 衰落信道条件,对交织深度与Turbo 码性能的关系进行了计算机模拟,给出了一种采用m 序列的伪随机交织器硬件电路实现方案,其复杂度与分组交织器相同,便于专用集成电路实现.
The important role of random interleaver in Turbo codes is analyzed. The design principle of interleaver is discussed. It is pointed out that the interleaving depth should be consistent with the size of data frame under the premise of meeting the delay requirement. Based on this, the relationship between the interleaving depth and the performance of Turbo codes is simulated based on the condition of additive white Gaussian noise channel and Rayleigh fading channel. A scheme of hardware circuit for pseudo-random interleaver using m-sequence is given. Its complexity is the same as that of packet interleaver, which is convenient for ASIC implementation.