Iterative channel estimation for turbo equalization of time-varying frequency-selective channels

被引：113

作者：

Otnes, R ^{[1
]}

Tüchler, M

机构：

[1] Norwegian Def Res Estab, NO-3191 Horten, Norway

[2] Univ Appl Sci, CH-5210 Windisch, Switzerland

来源：

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS | 2004年 / 3卷 / 06期

关键词：

channel estimation; high-frequency communications; iterative channel estimation; turbo equalization;

D O I：

10.1109/TWC.2004.837421

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We investigate turbo equalization, or iterative equalization and decoding, as a receiver technology for systems where data is protected by an error-correcting code, shuffled by an interleaver, and mapped onto a signal constellation for transmission over a frequency-selective channel with unknown time-varying channel impulse response. The focus is the concept of soft iterative channel estimation, which is to improve the channel estimate over the iterations by using soft information fed back from the decoder from the previous iteration to generate "extended training sequences" between the actual transmitted training sequences.

引用

页码：1918 / 1923

页数：6

共 29 条

[1] Adaptive soft-input soft-output algorithms for iterative detection with parametric uncertainty [J].