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The BER performance of OFDM systems using non-synchronized sampling

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3 Author(s)
T. Pollet ; Commun. Eng. Lab., Ghent Univ., Belgium ; P. Spruyt ; M. Moeneclaey

In fully digital receivers, carrier and timing information is derived from samples of the (anti-aliasing-filtered) received continuous-time signal. In case of synchronized sampling, this information is used to align the sampling clock of the receiver with the remote transmit clock. In nonsynchronized sampling systems, the sampling at the receiver is performed by means of a fixed free-running clock, and additional post-processing is necessary to perform timing correction in the digital domain. We investigate the effect of non-synchronized sampling on the BER performance of OFDM systems. We calculate the BER degradation caused by a given frequency offset between receiver and transmitter clock, as compared with the case of ideal sampling. The obtained results are compared with the performance of synchronized sampling systems

Published in:

Global Telecommunications Conference, 1994. GLOBECOM '94. Communications: The Global Bridge., IEEE

Date of Conference:

28 Nov- 2 Dec 1994