Abstract
In this paper, we propose a new baseband architecture for Internet of Things (IoT) terminals that support long range communications such as those based on Orthogonal Frequency-Division Multiple Access (OFDMA) and spread spectrum technologies. We analyze the workload profiles of both systems and find that the frame detection unit has by far the highest computational load. Based on this analysis, we propose a simple architecture that uses only a scalar datapath. To optimize for low energy consumption, we introduce application specific instructions that minimize register accesses and include address generation units for streamlined memory access. Next, we derive energy-optimal operation settings for different channel conditions. We find that if target signal detection probability is greater than 0.9 and false alarm probability is less than 0.1, then for both good and bad channel conditions, our baseband processor has the lowest energy when the frame detection algorithm uses the longest correlation window and the highest detection threshold value.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 1-11 |
| Number of pages | 11 |
| Journal | Journal of Signal Processing Systems |
| DOIs | |
| State | Accepted/In press - Jan 4 2018 |
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Keywords
- Baseband processor
- Frame detection
- IoT
- IoT
- Long range communication
- Low power
ASJC Scopus subject areas
- Control and Systems Engineering
- Theoretical Computer Science
- Signal Processing
- Information Systems
- Modeling and Simulation
- Hardware and Architecture
Cite this
Reducing Energy of Baseband Processor for IoT Terminals with Long Range Wireless Communications. / Wu, Shunyao; Chakrabarti, Chaitali; LEE, Hyunseok.
In: Journal of Signal Processing Systems, 04.01.2018, p. 1-11.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Reducing Energy of Baseband Processor for IoT Terminals with Long Range Wireless Communications
AU - Wu, Shunyao
AU - Chakrabarti, Chaitali
AU - LEE, Hyunseok
PY - 2018/1/4
Y1 - 2018/1/4
N2 - In this paper, we propose a new baseband architecture for Internet of Things (IoT) terminals that support long range communications such as those based on Orthogonal Frequency-Division Multiple Access (OFDMA) and spread spectrum technologies. We analyze the workload profiles of both systems and find that the frame detection unit has by far the highest computational load. Based on this analysis, we propose a simple architecture that uses only a scalar datapath. To optimize for low energy consumption, we introduce application specific instructions that minimize register accesses and include address generation units for streamlined memory access. Next, we derive energy-optimal operation settings for different channel conditions. We find that if target signal detection probability is greater than 0.9 and false alarm probability is less than 0.1, then for both good and bad channel conditions, our baseband processor has the lowest energy when the frame detection algorithm uses the longest correlation window and the highest detection threshold value.
AB - In this paper, we propose a new baseband architecture for Internet of Things (IoT) terminals that support long range communications such as those based on Orthogonal Frequency-Division Multiple Access (OFDMA) and spread spectrum technologies. We analyze the workload profiles of both systems and find that the frame detection unit has by far the highest computational load. Based on this analysis, we propose a simple architecture that uses only a scalar datapath. To optimize for low energy consumption, we introduce application specific instructions that minimize register accesses and include address generation units for streamlined memory access. Next, we derive energy-optimal operation settings for different channel conditions. We find that if target signal detection probability is greater than 0.9 and false alarm probability is less than 0.1, then for both good and bad channel conditions, our baseband processor has the lowest energy when the frame detection algorithm uses the longest correlation window and the highest detection threshold value.
KW - Baseband processor
KW - Frame detection
KW - IoT
KW - IoT
KW - Long range communication
KW - Low power
UR - http://www.scopus.com/inward/record.url?scp=85040066474&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85040066474&partnerID=8YFLogxK
U2 - 10.1007/s11265-017-1323-x
DO - 10.1007/s11265-017-1323-x
M3 - Article
AN - SCOPUS:85040066474
SP - 1
EP - 11
JO - Journal of Signal Processing Systems
JF - Journal of Signal Processing Systems
SN - 1939-8018
ER -