论文标题
最佳二进制/第四纪自适应签名设计，用于代码分割多路复用
Optimal Binary/Quaternary Adaptive Signature Design for Code-Division Multiplexing
论文作者
论文摘要
我们考虑在存在干扰和无线多路径褪色通道的情况下同步代码分级多路复用的签名波形设计。在最大sinr滤波器输出处最大化信噪比 - 噪声比率（SINR）的自适应真实/复杂签名是扰动自动助力矩阵的最小值元素特征向量。在数字通信系统中，签名字母是有限的，数字签名优化为NP-HARD。在本文中，首先，我们将自适应二进制签名设计的最大启动目标转换为同等的最小化问题。然后，我们提出一种基于修改的Fincke-POHST（FP）方法的自适应二进制签名设计算法，该方法以低复杂性实现了最佳的详尽搜索性能。另外，随着第四纪二元当量的推导，我们扩展并提出了第四纪字母的最佳自适应签名设计算法。数值结果证明了我们提出的算法的最佳性和复杂性降低。
We consider signature waveform design for synchronous code division multiplexing in the presence of interference and wireless multipath fading channels. The adaptive real/complex signature that maximizes the signal-to-interference-plus-noise ratio (SINR) at the output of the maximum-SINR filter is the minimum-eigenvalue eigenvector of the disturbance autocovariance matrix. In digital communication systems, the signature alphabet is finite and digital signature optimization is NP-hard. In this paper, first we convert the maximum-SINR objective of adaptive binary signature design into an equivalent minimization problem. Then we present an adaptive binary signature design algorithm based on modified Fincke-Pohst (FP) method that achieves the optimal exhaustive search performance with low complexity. In addition, with the derivation of quaternary-binary equivalence, we extend and propose the optimal adaptive signature design algorithm for quaternary alphabet. Numerical results demonstrate the optimality and complexity reduction of our proposed algorithms.
