首页> 外文期刊>IEEE Transactions on Signal Processing >An efficient block adaptive decision feedback equalizer implemented in the frequency domain
【24h】

An efficient block adaptive decision feedback equalizer implemented in the frequency domain

机译:在频域中实现的高效块自适应判决反馈均衡器

获取原文
获取原文并翻译 | 示例

摘要

In this paper, a new block adaptive decision feedback equalizer (DFE) implemented in the frequency domain is derived. The new algorithm is suitable for applications requiring long adaptive equalizers, as is the case in several high-speed wireless communication systems. The inherent "causality" problem appearing in the block adaptive formulation of the DFE equations is overcome by using tentative decisions in place of the unknown ones within each block. These tentative decisions are subsequently improved by using an efficient iterative procedure, which finally converges to the optimum decisions in a few iterations. This procedure is properly initialized by applying a minimization criterion that utilizes all the available information. The whole algorithm, including the iterative procedure, is implemented in the frequency domain and exhibits a considerable reduction in computational complexity, as compared with the conventional DFE, offering, at the same time, a noticeable increase in convergence speed. Additionally, the level of the steady-state MSE, which is achieved by the new algorithm, is practically insensitive to the block length.
机译:本文推导了一种在频域中实现的新的块自适应判决反馈均衡器(DFE)。这种新算法适用于需要长距离自适应均衡器的应用,就像在几种高速无线通信系统中的情况一样。 DFE方程的块自适应公式中出现的固有“因果关系”问题可以通过使用暂定决策代替每个块内的未知决策来解决。这些暂定决策随后通过使用有效的迭代过程进行了改进,该过程最终在几次迭代中收敛到最佳决策。通过应用利用所有可用信息的最小化准则,可以正确初始化此过程。与常规DFE相比,包括迭代过程在内的整个算法都在频域中实现,并且显着降低了计算复杂性,同时还显着提高了收敛速度。另外,通过新算法实现的稳态MSE级别实际上对块长度不敏感。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号