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Optimum Windowing for Multicarrier CDMA Systems with MMSE Receivers

Authors :
James S. Lehnert
Shun-Te Tseng
Source :
MILCOM 2007 - IEEE Military Communications Conference.
Publication Year :
2007
Publisher :
IEEE, 2007.

Abstract

The windows for achieving good multiple-access performance of multicarrier code-division multiple-access (MC-CDMA) systems employing minimum mean-squared error (MMSE) receivers are studied. The optimization objective, mean-squared error (MSE) minimization, is examined in the time domain. In a simplified two-user system, the optimization problem is shown to be equivalent to the problem of selecting the chip waveform in an asynchronous DS-CDMA system employing a matched filter. The rectangular window is shown to be optimum, while regarded as an inferior window in OFDM systems due to high spectral sidelobes and slow spectral rolloff.

Details

Database :
OpenAIRE
Journal :
MILCOM 2007 - IEEE Military Communications Conference
Accession number :
edsair.doi...........3905419b48e0088cc61748ec924490ef
Full Text :
https://doi.org/10.1109/milcom.2007.4455119