Name
Title | ||
|---|---|---|
Optimal reliable data feedback selection based iterative decision-directed channel estimation for OFDM system |
Abstract | ||
|---|---|---|
The acquisition of accurate channel estimation is important for Orthogonal Frequency-Division Multiplexing (OFDM) system to reliably recover the transmitted data symbols. Decision directed channel estimation (DDCE) has been utilized to improve the accuracy of conventional training-based channel estimation. However, this method can only provide limited improvement when the data decision feedback comprises a large portion of decision errors at low signal-to-noise (SNR) range. A new Iterative DDCE (IDDCE) scheme with reliable data feedback selection is proposed in this paper. The unreliable data decisions are eliminated on the subcarriers where noise components are enhanced due to the impact of frequency selective channel. An explicit expression of the variance of channel estimation error is derived, based on which the optimal selection criteria are also derived to minimize the variance. Simulation results show that the accuracy of channel estimation is significantly improved with the proposed algorithm. |
Year | DOI | Venue |
|---|---|---|
2011 | 10.1109/CCECE.2011.6030521 | CCECE |
Keywords | Field | DocType |
frequency selective channel,decision error,data decision feedback,ofdm modulation,iterative decision directed channel estimation,ofdm system,transmitted data symbol,training based channel estimation,iddce,orthogonal frequency division multiplexing system,ofdm,automatic repeat request,decision feedback,optimal reliable data feedback selection,iterative methods,channel estimation,radiocommunication,mean square error,bit error rate,estimation,reliability,signal to noise ratio | Computer science,Iterative method,Signal-to-noise ratio,Communication channel,Electronic engineering,Automatic repeat request,Multiplexing,Orthogonal frequency-division multiplexing,Bit error rate | Conference |
ISSN | ISBN | Citations |
0840-7789 E-ISBN : 978-1-4244-9787-4 | 978-1-4244-9787-4 | 2 |
PageRank | References | Authors |
0.41 | 7 | 5 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Jiaxin Yang | 1 | 48 | 8.07 |
| Xianbin Wang | 2 | 2365 | 223.86 |
| Xin Gao | 3 | 2 | 0.41 |
| sung ik park | 4 | 626 | 81.37 |
| Heung Mook Kim | 5 | 472 | 65.04 |