7.3 A 40nm low-power transceiver for LTE-A Carrier Aggregation

Chiu, Chaochang; Yen, Shih-Chieh; Yu, Chongxiu; Wu, Ting-Yi; Chou, Chen-Liang; Tseng, Shih-Pang; Shen, Chih-Hsien; Lu, Yu-Tsung; Chen, Hsin-Hung; Yang, Shao-Ming; Chen, None Yentso; Dehng, Guang-Kaai; Chen, Yangjian; Beghein, Christophe; Nalbantis, D.; Collados, M.; Tenbroek, Bernard; Strange, Jonathan; Wang, Caiyi

doi:10.1109/isscc.2017.7870295

Cited by 18 publications

(4 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In the frequency division duplex (FDD) operation, the transmit (TX) signal is located at the duplex distance of the PCC. While intraband contiguous CA is mostly implemented using a single RX path with extended BW of n • BW RX MHz, the noncontiguous case and the interband aggregation use a multitude of RX chains and phase-locked loops (PLLs) to receive the wanted channels [2]. The 3GPP standard now supports CA of up to five bands in downlink [8].…”

Section: Trends In Rf Front-endsmentioning

confidence: 99%

“…For example, the divider ratio following the oscillator can be changed to move a potential spur away from the BB [40]. Another approach is to shift the LO frequency to move the interfering signal away from the desired BB signal [2]. This low-IF approach requires a good image rejection ratio (IRR) and increases the power consumption because of the wider BW of the ADC.…”

Section: A Cross-talk Prevention Techniquesmentioning

confidence: 99%

“…The high complexity and nonlinear behavior of RF front ends (FEs) result in a multitude of SI mechanisms that cannot be targeted with traditional approaches. Receiver desense by intermodulation (IM) or harmonics of SI signals have to be targeted with advanced mitigation architectures, which allow the receiver to sustain the required sensitivity in such scenarios [2]. This work is licensed under a Creative Commons Attribution 4.0 License.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Survey of Self-Interference in LTE-Advanced and 5G New Radio Wireless Transceivers

Sadjina

Paireder

Huemer

et al. 2020

IEEE Trans. Microwave Theory Techn.

View full text Add to dashboard Cite

This article presents a comprehensive survey of the literature on self-interference (SI) in long-term evolution advanced (LTE-A) and fifth-generation (5G) new radio transceivers and should serve the reader as a guide and starting point for further work on SI management. Current trends in cellular transceiver designs are discussed, and reasons why new technologies, such as carrier aggregation, cause potential sensitivity degradation due to self-interfering signals are highlighted. The survey provides an overview of the most common interference mechanisms and continues with a taxonomy on SI mitigation architectures by comparing the strengths and weaknesses of various techniques.

show abstract

Section: Trends In Rf Front-endsmentioning

confidence: 99%

Section: A Cross-talk Prevention Techniquesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A Survey of Self-Interference in LTE-Advanced and 5G New Radio Wireless Transceivers

Sadjina

Paireder

Huemer

et al. 2020

IEEE Trans. Microwave Theory Techn.

View full text Add to dashboard Cite

show abstract

“…Currently, most of the manufacturers of mobile communication chip-sets realize their RF TRX designs in 40 nm [7], 28 nm [11,12], or similar CMOS technologies.…”

Section: Simplified Lte-advanced Transceiver Architecturementioning

confidence: 99%

From microwatt to gigabit: challenges of modern radio design

Pretl¹,

Faseth²,

Schumacher³

et al. 2018

Elektrotech. Inftech.

View full text Add to dashboard Cite

On the brink of introducing the fifth generation (5G) of cellular networks, the art of radio-frequency (RF) integrated circuit design has never seen such a wide spread of diverging requirements:On the one hand, ubiquitous sensor networks are mandating power budgets in the order of micro-watt. They should be constructed as energy-autonomous, wireless, low-cost sensor nodes. This demand is caused by massive deployment scenarios of billions of devices, which makes wires and batteries unpractical. As a result, the desire for the radio nodes to harvest their operational energy from the environment emerges.On the other hand, the recent and ongoing realization of gigabit-per-second capable cellular modems is driving hardware and power requirements to extremes. To overcome hardware limitations, introduced by analog impairments, digital correction and alignment algorithms are employed for compensation. These factors call for usage of expensive advanced CMOS technology nodes and increased utilization of digital signal processing techniques.In this paper, we recap ongoing trends and developments for ultra-low power and high-end transceiver (TRX) designs using CMOS technology nodes ranging from low-cost to highest performance.Keywords: RF; ultra-low-power; wireless architectures; transceiver; mixed-signal circuits; 5G Von Mikrowatt zu Gigabit: Herausforderungen beim Design moderner Funkübertragungssysteme. Neben der Einführung der zellularen Mobilfunknetze der fünften Generation (5G) muss sich auch die integrierte HochfrequenzSchaltungstechnik einer noch nie dagewesenen Breite an unterschiedlichen Anforderungen stellen: Auf der einen Seite gibt es überall kabellose Sensornetzwerke, denen nur eine geringe Menge an Versorgungsleistung im MikrowattBereich zur Verfügung steht. Daher müssen die Chips in diesem Bereich energieautark und möglichst kostengünstig entwickelt werden. Aufgrund der zu erwartenden hohen Stückzahlen (Milliarden von unterschiedlichsten Sensoren für verschiedene Anwendungen) sind eine drahtgebundene Energieversorgung oder der Einsatz von Batterien in vielen Fällen praktisch unmöglich. Somit wird es für die Sensoren immer wichtiger, ihre Energieversorgung aus der Umgebung zu gewinnen (Stichwort Energy Harvesting).

show abstract