针对自适应编码调制系统的低复杂度MMSE信道估计(英文)

来源 :中国通信 | 被引量 : 0次 | 上传用户:ricky1281214
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Performance of the Adaptive Coding and Modulation(ACM) strongly depends on the retrieved Channel State Information(CSI),which can be obtained using the channel estimation techniques relying on pilot symbol transmission.Earlier analysis of methods of pilot-aided channel estimation for ACM systems were relatively little.In this paper,we investigate the performance of CSI prediction using the Minimum Mean Square Error(MMSE)channel estimator for an ACM system.To solve the two problems of MMSE:high computational operations and oversimplified assumption,we then propose the Low-Complexity schemes(LC-MMSE and Recursion LC-MMSE(R-LC-MMSE)).Computational complexity and Mean Square Error(MSE) are presented to evaluate the efficiency of the proposed algorithm.Both analysis and numerical results show that LC-MMSE performs close to the wellknown MMSE estimator with much lower complexity and R-LC-MMSE improves the application of MMSE estimation to specific circumstances. Performance of the Adaptive Coding and Modulation (ACM) strongly depends on the retrieved Channel State Information (CSI), which can be obtained using the channel estimation techniques relying on pilot symbol transmission. Earlier analysis of methods of pilot-aided channel estimation for ACM systems were relatively little. This paper, we investigate the performance of CSI prediction using the Minimum Mean Square Error (MMSE) channel estimator for an ACM system. To solve the two problems of MMSE: high computational operations and oversimplified assumption, we then propose the Low-Complexity schemes (LC-MMSE and Recursion LC-MMSE). Computational complexity and Mean Square Error (MSE) are presented to evaluate the efficiency of the proposed algorithm. Book analysis and numerical results show that LC -MMSE performs close to the well known MMSE estimator with much lower complexity and R-LC-MMSE improves the application of MMSE estimation to specific circumstances.
其他文献
该文主要介绍当前国内外开展扩展频谱通讯技术的研究及应用前景。
会议
我省人工种植豆科柱花草发展很快,至1990年全省累计种草99万亩,产草量逐年提高,广大种草户以草代粮饲养畜禽,促进了畜牧业的发展。但是由于我省属热带和亚热带气候,春、夏两
会议
该文阐述了ISO-9002标准的重要性,并就如回推行该标准的具体做法提出了准备,编写质量手册、编写程序文件、审核与复审、进行认证等具体意见。