Reconfigurable Baseband Processing for Wireless Communications - Adaptive Signal Processing in Wireless Communications - page 438

15
Reconfigurable
Baseband Processing
for Wireless
Communications

André B. J. Kokkeler
University of Twente

Gerard K. Rauwerda
University of Twente

15.1 Introduction ..........................................................443
15.2 Reconigurable Platforms ....................................445
Fine-Grained Reconigurable Devices • Coarse-
Grained Reconigurable Devices • Tiled
Architecture • Network-on-Chip
15.3 Applications...........................................................454
Licensed Communications • Cognitive Radio
15.4 Mapping Applications to Multicore
Architectures ......................................................... 472
Design Time Mapping • Runtime Mapping
15.5 Conclusion ............................................................. 475
References ......................................................................... 475

Pascal T. Wolkotte
University of Twente

Qiwei Zhang
University of Twente

Philip K. F.
Hölzenspies
University of Twente

Gerard J. M. Smit
University of Twente

15.1 Introduction

Within wireless communications, advances in digital processing are pushing system
performance to higher levels, providing increasingly larger bandwidths and introducing
more complex coding and modulation schemes. Increasingly larger parts of processing
of both the radio access network (RAN) and user equipment (UE) are mapped onto digi-
tal computing devices. Looking at this mapping process, one can distinguish different
classes of processes (or tasks) and different types of computing devices.
A classification of processing is general purpose (GP processing), domain specific (DS
processing), and application specific (AS processing). GP processing is generally char-
acterized by a nonpredictable execution flow, whereas AS processing has a predictable
execution flow. A characteristic of DS processing is that several similar tasks or algo-
rithms are to be executed on a single computing device.
Computing devices or processors are generally classified as general-purpose pro-
cessors (GPPs), digital signal processors (DSPs), reconfigurable processors (RPs), and