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Commercial Baseband Technology Overview: the Current State of Technology Development and Future Directions

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Commercial Baseband Technology Overview: the Current State of Technology Development and Future Directions Commercial Baseband Technology Overview: The Current State of Technology Development and Future Directions Document WINNF-09-P-0009-V1.0.0 Version 1.0.0 5 February 2010 Copyright © 2010 The Software Defined Radio Forum Inc. – All Rights Reserved Commercial Baseband Processing Technologies Work Group Commercial Baseband Technology Overview WINNF-09-P-0009-V1.0.0 TERMS, CONDITIONS & NOTICES This document has been prepared by the Commercial Baseband Processing Technologies Work Group to assist The Software Defined Radio Forum Inc. (or its successors or assigns, hereafter “the Forum”). It may be amended or withdrawn at a later time and it is not binding on any member of the Forum or of the Commercial Baseband Processing Technologies Work Group. 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Copyright © 2010 The Software Defined Radio Forum Inc Page i All Rights Reserved Commercial Baseband Processing Technologies Work Group Commercial Baseband Technology Overview WINNF-09-P-0009-V1.0.0 Table of Contents TERMS, CONDITIONS & NOTICES ............................................................................................ i Contributors ................................................................................................................................... vi 1 Executive Summary ....................................................................................................................1 2 Introduction .................................................................................................................................2 3 Description of Contents...............................................................................................................3 Chapter 1 – Techniques for Commercial SDR Waveform Development (Etherstack) ...................4 Abstract ............................................................................................................................................4 1 Introduction .................................................................................................................................4 2 What is a Commercial SDR Waveform? ....................................................................................5 2.1 Portability .........................................................................................................................6 2.2 Maintainability .................................................................................................................6 2.3 Real-time Embedded Performance ..................................................................................6 3 Industry Status of SDR Waveform Development .......................................................................6 3.1 SDR Waveform Specialisation ........................................................................................7 3.2 Separation of Waveform and Platform Development ......................................................8 4 Commercial SDR Waveform Design at Etherstack ....................................................................8 4.1 Specification and Design .................................................................................................9 4.2 Implementation ................................................................................................................9 4.3 Integration ......................................................................................................................10 4.4 Maintenance ...................................................................................................................13 5 Porting to the Software Communications Architecture (SCA) .................................................14 6 Conclusion ................................................................................................................................15 7 References .................................................................................................................................15 Chapter 2 – IMEC’s low power SDR Solution ..............................................................................16 1 Solution target ...........................................................................................................................16 2 Functional Partitioning ..............................................................................................................16 3 Baseband Platform ....................................................................................................................17 3.1 Description .....................................................................................................................17 3.2 Implementation facts ......................................................................................................18 3.3 Baseband Engine ............................................................................................................18 3.3.1 CGA architecture exploration framework .............................................................19 3.3.2 Exploration methodology.......................................................................................20 3.3.3 SDR ADRES instance............................................................................................20 3.3.4 Implementation facts ..............................................................................................21 3.3.5 Performance facts...................................................................................................21 3.3.6 Availability ............................................................................................................23 3.4 Digital Front-End ...........................................................................................................23 3.4.1 DFE Architecture ...................................................................................................23 3.4.2 Power detection and AGC controller .....................................................................25 3.4.3 Synchronization engine ..........................................................................................26 Copyright © 2010 The Software Defined Radio Forum Inc Page ii All Rights Reserved Commercial Baseband Processing Technologies Work Group Commercial Baseband Technology Overview WINNF-09-P-0009-V1.0.0 3.4.4 Implementation facts ..............................................................................................27 3.4.5 Performance facts...................................................................................................27 3.4.6 Availability ............................................................................................................27 4 References .................................................................................................................................28 Chapter 3 – The Sandbridge Sandblaster SB3500 SDR MPSoC Baseband Processor for 4G Handsets .........................................................................................................................................29 Abstract ..........................................................................................................................................29 1 Introduction ...............................................................................................................................29 2 Architecture Overview ..............................................................................................................31 2.1 Vector Unit.....................................................................................................................32 2.1.1 Element-wise operations ........................................................................................32 2.2 Reduction operations .....................................................................................................33 2.3 Specialized operations ...................................................................................................33
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