Analysis of power‐frequency trade‐offs in millimeter‐wave CMOS oscillators

2019 ◽  
Vol 48 (1) ◽  
pp. 84-102
Author(s):  
Amard Afzalian ◽  
Hossein Miar‐Naimi ◽  
Massoud Dousti
Keyword(s):  
Millimeter Wave ◽  
Trade Offs ◽  
Cmos Oscillators ◽  
Power Frequency

scholarly journals Performance, Power, and Area Design Trade-Offs in Millimeter-Wave Transmitter Beamforming Architectures

2019 ◽  
Vol 19 (2) ◽  
pp. 33-58 ◽  
Author(s):  
Han Yan ◽  
Sridhar Ramesh ◽  
Timothy Gallagher ◽  
Curtis Ling ◽  
Danijela Cabric
Keyword(s):  
Millimeter Wave ◽  
Trade Offs

scholarly journals Physical Layer Latency Management Mechanisms: A Study for Millimeter-Wave Wi-Fi

Electronics ◽  
2021 ◽  
Vol 10 (13) ◽  
pp. 1599
Author(s):  
Alexander Marinšek ◽  
Daan Delabie ◽  
Lieven De Strycker ◽  
Liesbet Van der Perre
Keyword(s):  
Millimeter Wave ◽  
High Throughput ◽  
Physical Layer ◽  
Tuning Parameter ◽  
Channel Noise ◽  
Low Latency ◽  
Available Bandwidth ◽  
Transmission Parameters ◽  
Trade Offs ◽  
Key Factor

Emerging applications in fields such as extended reality require both a high throughput and low latency. The millimeter-wave (mmWave) spectrum is considered because of the potential in the large available bandwidth. The present work studies mmWave Wi-Fi physical layer latency management mechanisms, a key factor in providing low-latency communications for time-critical applications. We calculate physical layer latency in an ideal scenario and simulate it using a tailor-made simulation framework, based on the IEEE 802.11ad standard. Assessing data reception quality over a noisy channel yielded latency’s dependency on transmission parameters, channel noise, and digital baseband tuning. Latency in function of the modulation and coding scheme was found to span 0.28–2.71 ms in the ideal scenario, whereas simulation results also revealed its tight bond with the demapping algorithm and the number of low-density parity-check decoder iterations. The findings yielded tuning parameter combinations for reaching Pareto optimality either by constraining the bit error rate and optimizing latency or the other way around. Our assessment shows that trade-offs can and have to be made to provide sufficiently reliable low-latency communication. In good channel conditions, one may benefit from both the very high throughput and low latency; yet, in more adverse situations, lower modulation orders and additional coding overhead are a necessity.

scholarly journals On the beamforming design of millimeter wave UAV networks: Power vs. capacity trade-offs

2022 ◽  
pp. 108746
Author(s):  
Yang Wang ◽  
Marco Giordani ◽  
Xiangming Wen ◽  
Michele Zorzi
Keyword(s):  
Millimeter Wave ◽  
Trade Offs

Novel players fine-tune plant trade-offs

2015 ◽  
Vol 58 ◽  
pp. 83-100 ◽  
Author(s):  
Selena Gimenez-Ibanez ◽  
Marta Boter ◽  
Roberto Solano
Keyword(s):  
Ubiquitin Ligase ◽  
Feedback Loop ◽  
Molecular Level ◽  
26S Proteasome ◽  
Signalling Molecules ◽  
Transcriptional Reprogramming ◽  
Trade Offs ◽  
Jaz Proteins ◽  
Regulatory Feedback Loop ◽  
Fine Tune

Jasmonates (JAs) are essential signalling molecules that co-ordinate the plant response to biotic and abiotic challenges, as well as co-ordinating several developmental processes. Huge progress has been made over the last decade in understanding the components and mechanisms that govern JA perception and signalling. The bioactive form of the hormone, (+)-7-iso-jasmonyl-l-isoleucine (JA-Ile), is perceived by the COI1–JAZ co-receptor complex. JASMONATE ZIM DOMAIN (JAZ) proteins also act as direct repressors of transcriptional activators such as MYC2. In the emerging picture of JA-Ile perception and signalling, COI1 operates as an E3 ubiquitin ligase that upon binding of JA-Ile targets JAZ repressors for degradation by the 26S proteasome, thereby derepressing transcription factors such as MYC2, which in turn activate JA-Ile-dependent transcriptional reprogramming. It is noteworthy that MYCs and different spliced variants of the JAZ proteins are involved in a negative regulatory feedback loop, which suggests a model that rapidly turns the transcriptional JA-Ile responses on and off and thereby avoids a detrimental overactivation of the pathway. This chapter highlights the most recent advances in our understanding of JA-Ile signalling, focusing on the latest repertoire of new targets of JAZ proteins to control different sets of JA-Ile-mediated responses, novel mechanisms of negative regulation of JA-Ile signalling, and hormonal cross-talk at the molecular level that ultimately determines plant adaptability and survival.

Thin Film Inspection with Millimeter-Wave Reflectometer

1995 ◽  
Vol 7 (1) ◽  
pp. 89-100
Author(s):  
H. C. Han ◽  
E. S. Mansueto
Keyword(s):  
Thin Film ◽  
Millimeter Wave
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