Application of Shaping Technique With Turbo Coset Codes
Application of Shaping Technique With Turbo Coset Codes
复制标题
Turbo陪集码整形技术的应用
DOI：
10.1109/tvt.2007.898417
复制
发表时间：
2007
影响因子：
6.8
通讯作者：
W. Tong
中科院分区：
文献类型：
--
作者：
A. Khandani;W. Tong
本文提出了一种基于陪集编码的Turbo码与二次幅度调制相结合的方法。它还提出了一种固定速率成形算法，提供较低的复杂度相比，文献中报道的所有相关方法。作用于大小为4的符号的基于符号的turbo码被用于沿着每个1D子星座选择陪集沿着（使用分区Z/4Z）。所提出的陪集编码方法满足成形和编码分离的条件，因此，可以很容易地与成形算法集成。给出了加性白色高斯噪声信道的数值结果。建议的编码整形算法提供了最好的性能在文献中报道，享有非常低的复杂度，可以很容易地扩展，以适应不同的比特率和频谱效率，并没有遭受早期错误地板，在许多其他相关的作品中观察到。
This paper presents a method for the combined turbo code and quadratic-amplitude modulation using coset coding. It also presents a fixed-rate shaping algorithm offering lower complexity as compared to all relevant methods reported in the literature. A symbol-based turbo code acting on symbols of size 4 is used to select a coset along each 1D subconstellation (using the partition Z/4Z). The proposed coset coding method satisfies the conditions for the separability of shaping and coding, and, consequently, can be easily integrated with the shaping algorithm. Numerical results are presented for an additive white Gaussian noise channel. The proposed coding-shaping algorithm offers the best performance reported in the literature, enjoys very low complexity, can be easily scaled to accommodate different bit rates and spectral efficiencies, and does not suffer from an early error floor, as observed in many other related works.