Bit error rate analysis of convolutionally coded BICM with specific interleaver structures
Bit error rate analysis of convolutionally coded BICM with specific interleaver structures
复制标题
DOI：
10.1109/icc.2015.7248994
复制
发表时间：
2015-06
期刊：
影响因子：
--
通讯作者：
Yuta Hori;H. Ochiai
中科院分区：
文献类型：
--
作者：
Yuta Hori;H. Ochiai
比特交织编码调制（BICM）由于编码和调制设计简单，在各种无线通信系统中得到了广泛的应用。特别是，BICM与卷积编码相结合，由于其解码器侧的低复杂性和低延迟，已被几个最近的标准所采用。卷积编码BICM的性能不仅取决于编码的约束长度，而且在很大程度上取决于为分散相关比特而引入的比特交织器的结构。然而，到目前为止，由于精确分析的复杂性，还没有结合卷积编码的BICM对其性能进行理论分析，以很好地捕捉其对交织器结构的依赖。在本文中，我们推导了AWGN信道上的紧密近似误码率表达式，以评估其在给定位交织器结构下的性能，并给出了考虑其在衰落信道上性能的最佳交织器结构的设计准则。
Bit-interleaved coded modulation (BICM) has found its application in various wireless communication systems due to its simplicity in the design of coding and modulation. In particular, the BICM combined with convolutional coding has been adopted by several recent standards due to its low complexity and low latency at the decoder side. The performance of the convolutionally coded BICM depends not only on the constraint length of the code but also significantly on the structure of the bit interleavers introduced mainly for the purpose of dispersing the correlated bits. To date, however, theoretical analysis of the performance that well captures its dependence on the interleaver structures has not been presented in conjunction with the convolutionally coded BICM due to its complexity in precise analysis. In this paper, we derive a tight approximate BER expression over AWGN channels to evaluate its performance for a given bit interleaver structure, and present a design guideline for an optimal interleaver structure with its performance over fading channels in mind.