International Journal of Digital Multimedia Broadcasting
Volume 2009, Article ID 503130, 13 pages
http://dx.doi.org/10.1155/2009/503130
3G Long Term Evolution Baseband Processing with Application-Specific Processors
1Department of Computer Systems, Tampere University of Technology, P.O. Box 553, 33101 Tampere, Finland
2Centre for Wireless Communications, University of Oulu, P.O. Box 4500, 90014 Oulu, Finland
3Information Processing Laboratory, Department of Electrical and Information Engineering, University of Oulu, P.O. Box 4500, 90014 Oulu, Finland
Received 13 November 2008; Accepted 6 January 2009
Academic Editor: Daniel Iancu
Copyright © 2009 Perttu Salmela et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Data rates in the upcoming 3G long term evolution (LTE) standard will be manifold when compared to the current universal mobile telecommunications system. Implementing receivers conforming with the high-capacity transmission techniques is challenging due to the complexity and computational requirements of algorithms. In this study, the software defined radio (SDR) is targeted and the four essential baseband functions of the 3G LTE receiver, namely, list sphere decoding, fast Fourier transform, QR decomposition, and turbo decoding, are addressed and the functions are implemented as application specific processors (ASPs). As a result, the design space that describes the essential computational challenges of 3G LTE receivers is clarified and estimates of area, power, and interprocessor communication buffer requirements are presented.