Results 41 to 50 of about 72,846 (139)

The Front-End Readout as an Encoder IC for Magneto-Resistive Linear Scale Sensors

Sensors, 2016
This study proposes a front-end readout circuit as an encoder chip for magneto-resistance (MR) linear scales. A typical MR sensor consists of two major parts: one is its base structure, also called the magnetic scale, which is embedded with multiple grid
Trong-Hieu Tran, Paul Chang-Po Chao, Ping-Chieh Chien   +2 more
doaj   +1 more source

Spectrum and energy efficient kalman‐based hybrid combiner for mmWave massive MIMO systems

IET Communications, 2022
The hybrid beamforming can significantly improve the spectral and energy efficiencies of the millimeter‐wave (mmWave) massive multiple input multiple output (MIMO) systems without obvious performance loss.
Wafa Abid, Moufida Hajjaj, Ridha Bouallegue   +2 more
doaj   +1 more source

Beamforming Techniques for Large-N Aperture Arrays

, 2010
Beamforming is central to the processing function of all phased arrays and becomes particularly challenging with a large number of antenna element (e.g. >100,000).
Adami, K Zarb, de Vaate, J. G. Bij, Faulkner, A J, Kant, G. W., Pickard, P.   +4 more
core   +1 more source

Low Power OFDM Receiver Exploiting Data Sparseness and DFT Symmetry

International Journal of Distributed Sensor Networks, 2016
An undersampling technique appropriate for Orthogonal Frequency Division Multiplexing (OFDM) that can be implemented with low complexity hardware is presented. The OFDM receiver can operate in undersampling mode, 75% of the time. One of the advantages of
Nikos Petrellis
doaj   +1 more source

Performance Analysis of Rate Splitting in Massive MIMO Systems with Low Resolution ADCs/DACs

Applied Sciences, 2021
In this paper, we propose rate-splitting (RS) multiple access to mitigate the effects of quantization noise (QN) inherent in low-resolution analog-to-digital converters (ADCs) and digital-to-analog converters (DACs).
Roger Kwao Ahiadormey, Kwonhue Choi
doaj   +1 more source

Programmable Input Mode Instrumentation Amplifier Using Multiple Output Current Conveyors

Metrology and Measurement Systems, 2017
In this paper a programmable input mode instrumentation amplifier (IA) utilising second generation, multiple output current conveyors and transmission gates is presented.
Pankiewicz Bogdan
doaj   +1 more source

Jammer Mitigation via Beam-Slicing for Low-Resolution mmWave Massive MU-MIMO

IEEE Open Journal of Circuits and Systems, 2021
Millimeter-wave (mmWave) massive multi-user multiple-input multiple-output (MU-MIMO) promises unprecedented data rates for next-generation wireless systems.
Gian Marti, Oscar Castaneda, Christoph Studer   +2 more
doaj   +1 more source

BER Performance of Uplink Massive MIMO With Low-Resolution ADCs

, 2017
Massive multiple-input multiple-output (MIMO) is a promising technology for next generation wireless communication systems (5G). In this technology, Base Station (BS) is equipped with a large number of antennas.
Azizzadeh, Azad, Makki, Seyed Vahab Al-Din, Mohammadkhani, Reza   +2 more
core   +1 more source

Polarization-Modulation, I/Q-Demodulation Photonic Bandpass Sampling for Wideband, Multicarrier RF Application

IEEE Photonics Journal, 2017
Radio frequency (RF) photonic link under phase or polarization modulation and coherent in-phase/quadrature (I/Q) demodulation (ΦM/IQ or PolM/IQ) has been reported with unprecedented dynamic range performance, benefiting
Jieyu Ning, Yitang Dai, Feifei Yin, Junyi Zhang, Jianqiang Li, Wangzhe Li, Kun Xu   +6 more
doaj   +1 more source

DOA Estimation for Hybrid Massive MIMO Systems Using Mixed-ADCs: Performance Loss and Energy Efficiency

IEEE Open Journal of the Communications Society, 2023
Due to the power consumption and high circuit cost in antenna arrays, the practical application of massive multiple-input multiple-output (MIMO) in the sixth generation (6G) and future wireless networks is still challenging.
Baihua Shi, Qi Zhang, Rongen Dong, Qijuan Jie, Shihao Yan, Feng Shu, Jiangzhou Wang   +6 more
doaj   +1 more source