1. A Scalable MIMO Detector Processor With Near-ASIC Energy Efficiency.
- Author
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Fasthuber, Robert, Raghavan, Praveen, Van der Perre, Liesbet, and Catthoor, Francky
- Subjects
ENERGY consumption ,MIMO systems ,ANALOG circuits ,SEMICONDUCTORS - Abstract
Emerging 4G wireless communication systems need to deliver much higher data rates, more flexibility, and a significantly higher energy efficiency than current systems. To cope with this immense increase of requirements, new design approaches are a necessity. This paper focuses on the design of an advanced multiple-input–multiple-output (MIMO) detector, which is typically a bottleneck in the wireless receiver. In the proposed template-based design approach innovative architecture concepts, such as very wide register and distributed loop buffer, and algorithm-architecture co-optimizations are combined. The resulting MIMO detector processor, which is scalable to eight and more antennas, achieves a high area efficiency of 571 GOPS/ \mathrmmm^2 and a high energy efficiency of 3.3 GOPS/mW in the Taiwan Semiconductor Manufacturing Company (TSMC) 40-nm technology. By exploiting the dynamically varying requirements, the proposal has the potential to achieve a higher average energy efficiency than an application-specific integrated circuit (ASIC) equivalent. However, a penalty in total area consumption exists. The proposed architecture style offers an interesting and a very promising tradeoff in between the traditional ASIC and the other programmable processor solutions. [ABSTRACT FROM PUBLISHER]
- Published
- 2015
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