Patent ID: 9036723
Filing Date: 2015-05-19
Classification: H04L

Abstract:
1. A computer implemented method comprising: providing full-range pilot assisted frequency offset estimation in an orthogonal frequency-division multiplexing OFDM communication system, the providing comprises: using a single training symbol with two identical halves as well as a pilot-tone at a center frequency for both timing synchronization and carrier frequency offset estimation; achieving a timing synchronization by finding a peak of a cross-correlation function of the two halves in a first symbol; calculating a fraction part of a frequency offset FO from a phase difference between the two halves of a first training symbol; compensating a received signal for the fraction part of the frequency offset FO; and obtaining an integer part of the FO by counting shifted positions of a pilot-tone peak in a frequency domain of received data in the OFDM communication system.