Single carrier frequency domain equalization ultra-wideband system channel estimation method

A single-carrier frequency domain, channel estimation technology, applied in baseband system components, shaping network in transmitter/receiver, etc., can solve narrowband interference and other problems, and achieve the effect of improving accuracy
CN104301262AInactive Publication Date: 2015-01-21HENAN UNIV OF SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HENAN UNIV OF SCI & TECH
Publication Date
2015-01-21
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a single carrier frequency domain equalization ultra-wideband system channel estimation method and belongs to the technical field of an ultra-wideband communication system. The method is characterized by, to begin with, carrying out estimation on a single carrier frequency domain equalization ultra-wideband system by utilizing least square estimation; then, carrying out wavelet modulus maximum dynamic threshold calculation based on the estimation; detecting the position of narrow-band interference; and finally, recovering frequency response of a channel at the interference position through an interpolation method. Through the steps above, the method helps to improve the precision of channel estimation and the detection probability of the narrow-band interference, and further prove that the channel estimation method in the invention is superior to the LS channel estimation and wavelet modulus maximum threshold channel estimation through a simulation experiment.
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Description

technical field

[0001] The invention relates to a channel estimation method for a single-carrier frequency domain equalization ultra-wideband system, belonging to the technical field of ultra-wideband communication systems. Background technique

[0002] UWB has attracted more and more attention in recent years because of its high data transfer rate and low power consumption. The power of UWB system signal is very low and occupies a wide frequency band, which enhances the frequency selective fading of the channel. UWB (Multi-band Orthogonal Frequency Division Multiplexing, MB-OFDM) based UWB ( Ultra-wideband, UWB) system can effectively suppress channel frequency selective fading, but has a high peak-to-average ratio, and is very sensitive to timing errors and carrier frequency synchronization [1] . The Single Carrier Frequency Domain Equalization Ultra-wideband (SC-FDE UWB) system adopts single carrier block transmission, which can not only effectively suppress the frequen...

Claims

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