A Novel Hybrid Polar-I/Q Modulation Method relaxing RF Phase Modulator Design Requirements

Tobias Buckel; Peter Preyler; Ehrentraud Hager; Thomas Mayer; Stefan Tertinek; Andreas Springer; Robert Weigel

doi:10.1109/PRIME.2018.8430325

A Novel Hybrid Polar-I/Q Modulation Method relaxing RF Phase Modulator Design Requirements

Tobias Buckel
, Peter Preyler
, Ehrentraud Hager
, Thomas Mayer
, Stefan Tertinek
, Andreas Springer
, Robert Weigel

Research output: Chapter in Book/Report/Conference proceeding › Conference proceedings › peer-review

Abstract

A novel modulation scheme enabling a seamless transition between digital-intensive quadrature and polar transmitter architectures by combining inphase / quadrature (I/Q) with phase modulation is presented. By incorporating phase modulation the digital-quadrature RF digital-to-analog converter (DAC) input codewords peak to average power ratio is reduced. Therefore, the quadrature RF-DAC can be operated in a lower back-off region resulting in higher average output power and drain efficiency. Simulation results for LTE uplink transmission including the novel modulation scheme in combination with a drain efficiency model for a shared-cell, switched-capacitor RFDAC are shown. Compared to a digital-quadrature transmitter the average output power and efficiency can be increased, approaching the digital-polar limit while showing significantly lower tuning-range requirements on the phase modulation path.

Original language	English
Title of host publication	2018 14th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME)
Place of Publication	Prague, Czech Republic
Publisher	IEEE
Pages	181-184
Number of pages	4
ISBN (Print)	978-1-5386-5387-6
DOIs	https://doi.org/10.1109/PRIME.2018.8430325
Publication status	Published - Aug 2018

Fields of science

202038 Telecommunications
202040 Transmission technology
202 Electrical Engineering, Electronics, Information Engineering
202015 Electronics
202023 Integrated circuits
202030 Communication engineering
202037 Signal processing

Access to Document

10.1109/PRIME.2018.8430325

Cite this

@inproceedings{95565e0cd2724604a1dcccee317ae069,

title = "A Novel Hybrid Polar-I/Q Modulation Method relaxing RF Phase Modulator Design Requirements",

abstract = "A novel modulation scheme enabling a seamless transition between digital-intensive quadrature and polar transmitter architectures by combining inphase / quadrature (I/Q) with phase modulation is presented. By incorporating phase modulation the digital-quadrature RF digital-to-analog converter (DAC) input codewords peak to average power ratio is reduced. Therefore, the quadrature RF-DAC can be operated in a lower back-off region resulting in higher average output power and drain efficiency. Simulation results for LTE uplink transmission including the novel modulation scheme in combination with a drain efficiency model for a shared-cell, switched-capacitor RFDAC are shown. Compared to a digital-quadrature transmitter the average output power and efficiency can be increased, approaching the digital-polar limit while showing significantly lower tuning-range requirements on the phase modulation path.",

author = "Tobias Buckel and Peter Preyler and Ehrentraud Hager and Thomas Mayer and Stefan Tertinek and Andreas Springer and Robert Weigel",

year = "2018",

month = aug,

doi = "10.1109/PRIME.2018.8430325",

language = "English",

isbn = "978-1-5386-5387-6",

pages = "181--184",

booktitle = "2018 14th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME)",

publisher = "IEEE",

}

A Novel Hybrid Polar-I/Q Modulation Method relaxing RF Phase Modulator Design Requirements. / Buckel, Tobias; Preyler, Peter; Hager, Ehrentraud et al.
2018 14th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME). Prague, Czech Republic: IEEE, 2018. p. 181-184 8430325.

Research output: Chapter in Book/Report/Conference proceeding › Conference proceedings › peer-review

TY - GEN

T1 - A Novel Hybrid Polar-I/Q Modulation Method relaxing RF Phase Modulator Design Requirements

AU - Buckel, Tobias

AU - Preyler, Peter

AU - Hager, Ehrentraud

AU - Mayer, Thomas

AU - Tertinek, Stefan

AU - Springer, Andreas

AU - Weigel, Robert

PY - 2018/8

Y1 - 2018/8

N2 - A novel modulation scheme enabling a seamless transition between digital-intensive quadrature and polar transmitter architectures by combining inphase / quadrature (I/Q) with phase modulation is presented. By incorporating phase modulation the digital-quadrature RF digital-to-analog converter (DAC) input codewords peak to average power ratio is reduced. Therefore, the quadrature RF-DAC can be operated in a lower back-off region resulting in higher average output power and drain efficiency. Simulation results for LTE uplink transmission including the novel modulation scheme in combination with a drain efficiency model for a shared-cell, switched-capacitor RFDAC are shown. Compared to a digital-quadrature transmitter the average output power and efficiency can be increased, approaching the digital-polar limit while showing significantly lower tuning-range requirements on the phase modulation path.

AB - A novel modulation scheme enabling a seamless transition between digital-intensive quadrature and polar transmitter architectures by combining inphase / quadrature (I/Q) with phase modulation is presented. By incorporating phase modulation the digital-quadrature RF digital-to-analog converter (DAC) input codewords peak to average power ratio is reduced. Therefore, the quadrature RF-DAC can be operated in a lower back-off region resulting in higher average output power and drain efficiency. Simulation results for LTE uplink transmission including the novel modulation scheme in combination with a drain efficiency model for a shared-cell, switched-capacitor RFDAC are shown. Compared to a digital-quadrature transmitter the average output power and efficiency can be increased, approaching the digital-polar limit while showing significantly lower tuning-range requirements on the phase modulation path.

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U2 - 10.1109/PRIME.2018.8430325

DO - 10.1109/PRIME.2018.8430325

M3 - Conference proceedings

SN - 978-1-5386-5387-6

SP - 181

EP - 184

BT - 2018 14th Conference on Ph.D. Research in Microelectronics and Electronics (PRIME)

PB - IEEE

CY - Prague, Czech Republic

ER -

A Novel Hybrid Polar-I/Q Modulation Method relaxing RF Phase Modulator Design Requirements

Abstract

Fields of science

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Christian Doppler Laboratory for Digitally Assisted RF Transceivers for Future Mobile Communications

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A Novel Hybrid Polar-I/Q Modulation Method relaxing RF Phase Modulator Design Requirements

Abstract

Fields of science

Access to Document

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Projects

Christian Doppler Laboratory for Digitally Assisted RF Transceivers for Future Mobile Communications

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