Power- and spectral efficient communication system design using 1-bit quantization

Jedda, Hela; Ayub, Muhammad Mudussir; Munir, Jawad; Mezghani, Amine; Nossek, Josef A.

doi:10.1109/iswcs.2015.7454349

Cited by 5 publications

(2 citation statements)

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“…The concept of QCE precoding and general constellations is studied in this contribution. It is worth mentioning that the QCE precoding can be combined with appropriate pulse shaping strategies as in [41], [42] to ensure an efficient spectral confinement. In [43], it was shown that CE precoding is still power efficient even when considering the time processing.…”

Section: A Related Workmentioning

confidence: 99%

Quantized Constant Envelope Precoding With PSK and QAM Signaling

Jedda

Mezghani

Swindlehurst

et al. 2018

IEEE Trans. Wireless Commun.

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Coarsely quantized massive Multiple-Input Multiple-Output (MIMO) systems are gaining more interest due to their power efficiency. We present a new precoding technique to mitigate the Multi-User Interference (MUI) and the quantization distortions in a downlink Multi-User (MU) MIMO system with coarsely Quantized Constant Envelope (QCE) signals at the transmitter. The transmit signal vector is optimized for every desired received vector taking into account the QCE constraint. The optimization is based on maximizing the safety margin to the decision thresholds of the receiver constellation modulation. Simulation results show a significant gain in terms of the uncoded Bit Error Ratio (BER) compared to the existing linear precoding techniques.

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Section: A Related Workmentioning

confidence: 99%

Quantized Constant Envelope Precoding With PSK and QAM Signaling

Jedda

Mezghani

Swindlehurst

et al. 2018

IEEE Trans. Wireless Commun.

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“…This work can be easily extended to unequal available powers of the PAs among the antennas. A circuit-based characterization of the PA power consumption P PA from [13] provides the following expression…”

Section: Pa Modelmentioning

confidence: 99%

Precoding under instantaneous per-antenna peak power constraint

Jedda

Mezghani

Swindlehurst

et al. 2017

2017 25th European Signal Processing Conference (EUSIPCO)

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Abstract-We consider a multi-user (MU) multiple-inputsingle-output (MISO) downlink system with M single-antenna users and N transmit antennas with a nonlinear power amplifier (PA) at each antenna. Instead of emitting constant envelope (CE) signals from the antennas to have highly power efficient PAs, we relax the CE constraint and allow the transmit signals to have instantaneous power less than or equal to the available power at each PA. The PA power efficiency decreases but simulation results show that the same performance in terms of bit-errorratio (BER) can be achieved with less transmitted power and less PA power consumption. We propose a linear and a nonlinear precoder design to mitigate the multi-user interference (MUI) under the constraint of a maximal instantaneous per-antenna peak power.

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