Channel Estimation Based on Interpolation in OFDM System

Yue Hua Cui; Shuang Ye; Qiu Rui Wu; Jian Hua Liu; Yan Dai

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

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 439-440Channel Estimation Based on Interpolation in OFDM...

Channel Estimation Based on Interpolation in OFDM System

Abstract:

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.

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Periodical:

Key Engineering Materials (Volumes 439-440)

Pages:

794-798

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.439-440.794

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Online since:

June 2010

Authors:

Yue Hua Cui, Shuang Ye, Qiu Rui Wu, Jian Hua Liu, Yan Dai

Keywords:

Channel Estimation, Interpolation, Orthogonal Frequency Division Multiplexing (OFDM), Pilot Signal

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References

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