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Novel block constructions using an intrafix for CPM with frequency domain equalization

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5 Author(s)
Van Thillo, W. ; Interuniversity Micro-Electron. Center (IMEC), Leuven, Belgium ; Horlin, F. ; Ramon, V. ; Bourdoux, A.
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To enable frequency domain equalization (FDE) for continuous phase modulation (CPM), both cyclicity of individual symbol blocks and phase continuity between different blocks have to be guaranteed. In this letter, we present new block constructions that use a subblock of data-dependent symbols, called intrafix, to satisfy both constraints for different CPM-FDE systems: using either a cyclic prefix or a training sequence (TS), both for precoded and nonprecoded CPM. The known symbols of a TS can be used to improve synchronization and channel estimation. Precoding can be applied to a certain class of CPM schemes to halve the bit error rate.

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Wireless Communications, IEEE Transactions on  (Volume:9 ,  Issue: 3 )