| 单载波系统迭代频域均衡技术及优化传输 | |
| 李海涛 ; 林孝康 ; LI Haitao ; LIN Xiaokang | |
| 2010-06-09 ; 2010-06-09 | |
| 关键词 | 无线通信 码间干扰 频域均衡(FDE) 信噪比-方差演进 循环预编码 wireless communication inter-symbol interference(ISI) frequency domain equalization(FDE) signal-to-noise ratio variance evolution circular precoding TN925 |
| 其他题名 | Iterative FDE technique and transmission optimization for single-carrier systems |
| 中文摘要 | 针对码间干扰信道下的单载波通信系统,提出一种低复杂度、适用于任意高阶调制、基于线性最小均方误差准则的迭代频域均衡(FDE)算法,并引入信噪比-方差演进技术来预测迭代系统性能。基于信噪比-方差演进原理,对发射信号频谱进行整形优化,设计一种在频域可以快速实现的循环预编码。该预编码的引入既不增加循环前缀的所需长度,也不增加接收机端的均衡复杂度。仿真结果表明,循环预编码优化后系统所需的发射功率可以降低1～3dB。; A low-complexity frequency domain equalization(FDE) technique based on the linear-minimum-mean-square-error principle was developed for single-carrier communication systems with any arbitrary higher-order modulation over inter-symbol interference(ISI) channels.A signal-to-noise ratio variance evolution technique was used to quickly and accurately evaluate the system performance.A circular precoder was developed based on this evolution technique to shape the spectrum of transmitted signals and optimize the system performance.The precoder can be efficiently implemented in the frequency domain and does not increase either the required length of the cyclic prefix,or the equalization complexity at the receiver.Simulations show that the optimally precoded system gives a 1-3 dB power gain. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://hdl.handle.net/123456789/54988]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 李海涛,林孝康,LI Haitao,等. 单载波系统迭代频域均衡技术及优化传输[J],2010, 2010. |
| APA | 李海涛,林孝康,LI Haitao,&LIN Xiaokang.(2010).单载波系统迭代频域均衡技术及优化传输.. |
| MLA | 李海涛,et al."单载波系统迭代频域均衡技术及优化传输".(2010). |
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