Title :
Multitone synchronization for fading channels
Author :
Zaman, S.U. ; Yates, K.W.
Author_Institution :
Alcatel Australia Ltd., Sydney, NSW, Australia
Abstract :
A novel synchronization technique suitable for packetized, non-constant envelope data transmission is proposed. A DFT-based closed loop system is used to acquire and recover the carrier phase and the symbol timing at the receiver by use of a preamble waveform which consists of sets of harmonically related sinusoids. The phase information extracted from the DFT is used in a linear regression algorithm to obtain an estimate of phase and timing. An algorithm optimized for frequency-selective fading channels by adding a weighting factor in the regression algorithm is also presented
Keywords :
closed loop systems; data communication; discrete Fourier transforms; fading; packet switching; phase estimation; signal detection; synchronisation; time-varying channels; DFT-based closed loop system; carrier phase; fading channels; frequency-selective fading channels; harmonically related sinusoids; linear regression algorithm; multitone synchronization; packetized nonconstant envelope data transmission; phase information; preamble waveform; receiver; symbol timing; synchronization technique; weighting factor; Australia; Clocks; Data communication; Discrete Fourier transforms; Fading; Frequency synchronization; Linear regression; Phase locked loops; Sampling methods; Timing;
Conference_Titel :
Communications, 1994. ICC '94, SUPERCOMM/ICC '94, Conference Record, 'Serving Humanity Through Communications.' IEEE International Conference on
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-1825-0
DOI :
10.1109/ICC.1994.368960
