On Efficient Adaptive Equalization of Block Data Transmission 


Vol. 28,  No. 1, pp. 37-46, Jan.  2003


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  Abstract

This paper discusses the adaptive channel equalization in wideband/high-speed data transmission systems where complexity reduction is crucial for real-time implementation We assume that the data are transmitted in a block fashion with the guard symbol block inserted in between the data blocks An example of the guard symbols is the cyclic prefix (CP) adopted in the standard discrete multitone and orthogonal frequency division multiplexing modems In this paper, the CP is replaced with the fixed guard symbols (FGS) that do not change for different data blocks Interesting this change allows us to obtain the same effects as we can get from the case of CP guard symbols. However, unlike the CP, the FGS block is always the same and thus the FGS can be made known to the receiver The object of our study is then on how to design computationally efficient channel equalizers while the FGS is effectively utilized in channel equalization To do so, our approach begins with defining the block mean-squared error as a cost function and considers a corresponding adaptive algorithm that enables an efficient frequency-domain implementation. Then, several block-adaptive structures are studied and their performances are evaluated It is shown that the efficient channel equalizers using the FGS are working well without requiring the extra training sequences

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  Cite this article

[IEEE Style]

S. Lee and J. Lee, "On Efficient Adaptive Equalization of Block Data Transmission," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 1, pp. 37-46, 2003. DOI: .

[ACM Style]

Sang-Kyung Lee and Jae-Chon Lee. 2003. On Efficient Adaptive Equalization of Block Data Transmission. The Journal of Korean Institute of Communications and Information Sciences, 28, 1, (2003), 37-46. DOI: .

[KICS Style]

Sang-Kyung Lee and Jae-Chon Lee, "On Efficient Adaptive Equalization of Block Data Transmission," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 1, pp. 37-46, 1. 2003.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880