Exploiting error-control coding and cyclic-prefix in channel estimation for coded OFDM systems

被引：23

作者：

Al-Rawi, GA ^{[1
]}

Al-Naffouri, TY ^{[1
]}

Bahai, A ^{[1
]}

Cioffi, J ^{[1
]}

机构：

[1] Stanford Univ, Stanford, CA 94305 USA

来源：

IEEE COMMUNICATIONS LETTERS | 2003年 / 7卷 / 08期

关键词：

adaptive equalization; blind channel estimation; iterative detection; multicarrier transmission;

D O I：

10.1109/LCOMM.2003.814712

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

OFDM systems typically use coding and interleaving across subchannels to exploit frequency diversity on frequency-selective channels. This letter presents a low-complexity iterative algorithm for blind and semi-blind joint channel estimation and soft decoding in coded OFDM systems. The proposed algorithm takes advantage of the channel finite delay-spread constraint and the extra observation offered by the cyclic-prefix. It, converges within a single OFDM symbol and, therefore, has a minimum latency.

引用

页码：388 / 390

页数：3

共 9 条

[1]

ALNAFFOURI TY, UNPUB IEEE T SIGNAL

[2]

GARCIAFRIAS J, 1999, P IEEE ICC 99 COMM T, P52

[3] Exploiting input cyclostationarity for blind channel identification in OFDM systems [J].