Reconfigurable stream processors for wireless base-stations
| dc.citation.bibtexName | techreport | en_US |
| dc.citation.issueNumber | TREE0305 | en_US |
| dc.citation.journalTitle | Rice University ECE Technical Report | en_US |
| dc.citation.location | Houston, TX | en_US |
| dc.contributor.author | Rajagopal, Sridhar | en_US |
| dc.contributor.author | Rixner, Scott | en_US |
| dc.contributor.author | Cavallaro, Joseph R. | en_US |
| dc.contributor.org | Center for Multimedia Communications (http://cmc.rice.edu/) | en_US |
| dc.date.accessioned | 2007-10-31T00:59:35Z | |
| dc.date.available | 2007-10-31T00:59:35Z | |
| dc.date.issued | 2003-10-20 | |
| dc.date.modified | 2004-01-05 | en_US |
| dc.date.submitted | 2004-01-05 | en_US |
| dc.description | Tech Report | en_US |
| dc.description.abstract | This paper presents the design and use of reconfigurable stream processors for the physical layer processing in wireless base-stations. Stream processors, traditionally used for high performance media processing, use clusters of functional units to provide support for hundreds of functional units in a programmable architecture. We provide hardware support for reconfiguration in stream processors, enabling them to be power-efficient by adapting to the compute requirements of the application. We demonstrate the real-time implementation of a 32-user wireless base-station, employing multiuser channel estimation, multiuser detection and Viterbi decoding physical layer algorithms, supporting a data rate of 128 Kbps/user. The reconfigurable stream processor runs at 1.2 GHz and has an estimated power consumption of 12.38 W at full workload. However, basestations rarely operate at full capacity. When the base-station workload decreases, the reconfigurable stream processor adapts the number of clusters, functional units, voltage and frequency dynamically for power efficiency. When the application workload changes to 4 users, the reconfiguration support reduces the power to 300 mW at 433 MHz, providing a 41.27X decrease in power consumption. The cluster reconfiguration yields an additional 15-85% power savings over a stream processor with dynamic voltage and frequency scaling. | en_US |
| dc.identifier.citation | S. Rajagopal, S. Rixner and J. R. Cavallaro, "Reconfigurable stream processors for wireless base-stations," <i>Rice University ECE Technical Report,</i> no. TREE0305, 2003. | |
| dc.identifier.uri | https://hdl.handle.net/1911/20234 | |
| dc.language.iso | eng | |
| dc.relation.project | http://www.ece.rice.edu/~sridhar | en_US |
| dc.subject | stream processors | * |
| dc.subject | wireless | * |
| dc.subject | reconfigurable | * |
| dc.subject | power aware | * |
| dc.subject.keyword | stream processors | en_US |
| dc.subject.keyword | wireless | en_US |
| dc.subject.keyword | reconfigurable | en_US |
| dc.subject.keyword | power aware | en_US |
| dc.title | Reconfigurable stream processors for wireless base-stations | en_US |
| dc.type | Report | |
| dc.type.dcmi | Text |
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