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超正交卷积适合于扩频通讯应用。 Petri提出了超正交卷积 Turbo码 (SuperorthogonalConvolutional Turbo Code ,SCTC) [1 ] ,由于带宽的扩展 ,这类码的性能比一般的 Turbo码好。推导了一般 SCTC码的构造 ,同时导出了存储单元分别为 2 ,3的 SCTC的转移函数。最后分别给出了 AWGN信道下 SCTC码的误码率性能上限 ,计算机模拟的 max- log- MAP和 SOVA译码算法的误码率性能
Orthogonal convolution is suitable for spread spectrum communication applications. Petri proposed the Superorthogonal Convolutional Turbo Code (SCTC) [1], whose performance is better than that of general Turbo codes due to the expansion of bandwidth. The construction of general SCTC codes is deduced, and the transfer functions of SCTC with memory units of 2 and 3 respectively are derived. Finally, the upper limit of BER performance of SCTC codes under AWGN channel, the BER performance of max-log-MAP and SOVA decoding algorithms simulated by computer