Channel Estimation Using Frequency-domain Superimposed Pilot Time-Domain Correlation Method for OFDM Systems

2006 ◽  
Author(s):  
Shouyin Liu ◽  
Jinjing Zhan ◽  
Wenwu Xie ◽  
Fan Li
Keyword(s):  
Channel Estimation ◽  
Frequency Domain ◽  
Time Domain ◽  
Correlation Method ◽  
Ofdm Systems ◽  
Time Domain Correlation

Velocity Profile Measurement in Turbulent Pipe Flow Using Ultrasound Time-Domain Correlation Method

2002 ◽  
Author(s):  
Gentaro Yamanaka ◽  
Hiroshige Kikura ◽  
Masanori Aritomi
Keyword(s):  
Velocity Profile ◽  
Time Domain ◽  
Pipe Flow ◽  
Correlation Method ◽  
Turbulent Pipe Flow ◽  
Profile Measurement ◽  
Doppler Method ◽  
Velocity Profile Measurement ◽  
Pulse Doppler ◽  
Time Domain Correlation

This paper presents a velocity profile measurement technique using a ultrasound time-domain correlation method (UTDC). The system is based on the cross correlation between two consecutive echoes of ultrasonic pulses to detect the velocity. The UTDC has two advantages over a conventional ultrasound pulse Doppler method. First, the system has a higher time resolution than the pulse Doppler method. Second, the system does not have a limitation in maximum measurable velocity, which is limited by Nyquist’s sampling theorem. In this paper, the velocity profile measurement in turbulent pipe flow using the UTDC is performed.

Sign in / Sign up

Export Citation Format

Share Document