Joint data detection and phase recovery for downlink MC-2D-CDMA systems

Authors:
Rui Fa;Pei Xiao
Affiliations:
Department of Electronics, The University of York, York, UK;Institute of Electronics, Communications and Information Technology, Queen's University Belfast, UK
Venue:
IEEE Transactions on Communications
Year:
2009

Citing 5
Cited 0

Microwave Mobile Communications

Microwave Mobile Communications
Performance of adaptive MC-CDMA detectors in rapidly fading Rayleigh channels

IEEE Transactions on Wireless Communications
Correction of extrinsic information for iterative decoding in a serially concatenated multiuser DS-CDMA system

IEEE Transactions on Wireless Communications
Probability of error in MMSE multiuser detection

IEEE Transactions on Information Theory
Overview of multicarrier CDMA

IEEE Communications Magazine

Quantified Score

Hi-index	0.00

Visualization

Abstract

The performance of a downlink synchronous MCCDMA system with joint frequency-time domain spreading (MC- 2D-CDMA) is investigated in this paper. We propose a two dimensional adaptive minimum mean square error (MMSE) receiver, which works in decision-directed mode after an initial training period. A subcarrier phase tracker, which comprises a bank of phase locked-loops (PLLs), is employed in the receiver to track the fading phase variability. Furthermore, a simplified phase tracker structure is proposed to reduce the system complexity. The performance of the data detector and the behavior of the phase tracker are analyzed theorectically in this paper and are shown to match the simulation results. Both analysis and simulation indicate that the proposed system outperforms the conventional MC-DS-CDMA systems by exploiting frequency diversity and facilitating subcarrier synchronization.