A robust pilot-assisted equaliser for the partially loaded downlink UMTS TDD

Hadef, M. and Daas, A. and Weiss, S. and Reiss, Josh and Chen, Xiaodong (2007) A robust pilot-assisted equaliser for the partially loaded downlink UMTS TDD. In: 15th European Signal Processing Conference, 2007-09-03 - 2007-09-07. (http://www.elec.qmul.ac.uk/people/josh/documents/H...)

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Abstract

In this paper, we propose a robust pilot-assisted equalisation strategy for the partially loaded time-division duplex (TDD) component of the universal mobile telecommunications system (UMTS). In addition to training-based equalisation performed using the midamble of a data packet, some of the unused preading codes are exploited to upload pilots in order to perform an additional semi-blind adaptation over the payload of a packet. The latter ensures continuous adaptation and better tracking performance. The affine projection concept along with the concurrent constant modulus algorithm (CMA) and decision-directed (DD) mode are implemented to update the equaliser weights. Computer simulations are used to assess the performance of the proposed adaptation strategy over various UMTS TDD time bursts

ORCID iDs

Hadef, M., Daas, A. ORCID logoORCID: https://orcid.org/0000-0002-2924-2519, Weiss, S. ORCID logoORCID: https://orcid.org/0000-0002-3486-7206, Reiss, Josh and Chen, Xiaodong;