Title :
Complexity Reduction of High-Performance Frequency Domain Equalization for CPM
Author :
Thillo, W. Van ; Nsenga, J. ; Lauwereins, R. ; Ramon, V. ; Bourdoux, A. ; Horlin, F.
Author_Institution :
Interuniversity Micro-Electron. Center (IMEC), Leuven
Abstract :
Continuous phase modulations (CPM) have a perfectly constant envelope and are inherently robust against analog front-end nonidealities. Therefore, they have recently been proposed for several modern wireless standards. In this paper, we further develop an existing high-performance frequency domain equalization approach for CPM signals. First, we introduce a polyphase matrix model, valid for any block-based CPM system, which has clear advantages compared to existing models. Second, the model is used to reduce the complexity of the existing minimum mean square error channel equalizer. The proposed technique can be applied to any CPM scheme. Simulation results in a 60 GHz environment confirm that it does not cause any noticeable performance degradation.
Keywords :
continuous phase modulation; equalisers; matrix algebra; mean square error methods; wireless channels; CPM; continuous phase modulations; frequency 60 GHz; high-performance frequency domain equalization; minimum mean square error channel equalizer; polyphase matrix model; wireless standards; Autocorrelation; Demodulation; Equalizers; Fast Fourier transforms; Frequency domain analysis; Matrix decomposition; Mean square error methods; Performance loss; Random access memory; Robustness;
Conference_Titel :
Global Telecommunications Conference, 2008. IEEE GLOBECOM 2008. IEEE
Conference_Location :
New Orleans, LO
Print_ISBN :
978-1-4244-2324-8
DOI :
10.1109/GLOCOM.2008.ECP.926
