Title :
Frequency offset correction for HF radio speech reception
Author :
Cole, David ; Sridharan, Sridha ; Moody, Miles
Author_Institution :
Speech Res. Lab., Queensland Univ. of Technol., Brisbane, Qld., Australia
fDate :
4/1/2000 12:00:00 AM
Abstract :
High-frequency single-sideband (HF-SSB) radio communication suffers from highly variable propagation conditions and high levels of interference noise. One common distortion is frequency shifting of the received signal due to differences in carrier frequencies at transmitter and receiver, or to Doppler shifts due to the transmission path. This paper presents a novel and efficient technique to compensate for this frequency offset using only the received speech signal to determine and correct the frequency error. Good improvement in received speech quality is achieved, using a mean opinion score measurement
Keywords :
HF radio propagation; compensation; radiocommunication; speech processing; voice communication; HF radio speech reception; carrier frequency differences; frequency offset compensation; frequency offset correction; high-frequency single-sideband radio communication; interference noise; mean opinion score measurement; received speech quality improvement; signal distortion; signal frequency shifting; variable propagation conditions; Distortion; Doppler shift; Frequency; Hafnium; Interference; Noise level; Radio communication; Radio transmitters; Receivers; Speech;
Journal_Title :
Industrial Electronics, IEEE Transactions on
