Channel estimation and equalization based on origin analysis

Article type: Research Article

Authors: Wang, Peng^* | Wu, Zhengyang | Qian, Feng

Affiliations: School of Physical and Electronic Engineering, Changshu Institute of Technology, Jiangsu, China

Correspondence: [*] Corresponding author: Peng Wang, School of Physical and Electronic Engineering, Changshu Institute of Technology, Jiangsu, China. Tel.: +86 512 52251556; Fax: +86 512 52251552; E-mail:epwang@xatu.edu.cn

Abstract: The presence of inter-symbol interference (ISI) can significantly degrade the performance of digital communication systems. Generally, an ISI channel can be modeled as a time-varying FIR filter. The ISI effect can thus be removed by inverse-filtering the distorted signal at the receiver. This paper, however, presents a different approach, which, other than recovering the source signal directly, attempts to adapt the decision rule in accordance with the channel statistics, so as to retrieve the loss of BER performance caused by ISI.

Keywords: Inter-symbol interference, channel equalization, channel estimation

DOI: 10.3233/JCM-150578

Journal: Journal of Computational Methods in Sciences and Engineering, vol. 15, no. 4, pp. 719-728, 2015