Channel Estimation Based on Interpolation in OFDM System

Abstract:

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OFDM(Orthogonal Frequency Division Multiplexing)is a new modulation technology, which can reduce multi-pass interference efficiently. It splits a high-rate data stream into a number of lower-rate data streams which can be transmitted simultaneously over a number of subcarriers. It brings high spectral efficiency. In this paper, we first introduce the channel estimation algorithm based on comb-pilot in OFDM system, and emphasis on analysis and comparison of the three kinds of interpolation methods: linear interpolation, low-pass interpolation and transform-domain interpolation. We use MATLAB to carry out the system simulation, and its results indicate that: The performance of low-pass interpolation is the best ,but it’s hard to carry out; transform-domain interpolation’s performance and complexity are both between above two methods.

Info:

Periodical:

Key Engineering Materials (Volumes 439-440)

Edited by:

Yanwen Wu

Pages:

794-798

DOI:

10.4028/www.scientific.net/KEM.439-440.794

Citation:

Y. H. Cui et al., "Channel Estimation Based on Interpolation in OFDM System", Key Engineering Materials, Vols. 439-440, pp. 794-798, 2010

Online since:

June 2010

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Price:

$35.00

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