Results 51 to 60 of about 7,286,512 (152)

DOA estimation for far-field sources in mixed signals with mutual coupling and gain-phase error array

open access: yesEURASIP Journal on Wireless Communications and Networking, 2018
Mutual coupling and gain-phase errors are very common in sensor channels for array signal processing, and they have serious impacts on the performance of most algorithms, especially in practical applications.
Jiaqi Zhen, Baoyu Guo
doaj   +1 more source

A dielectric free near field phase transforming structure for wideband gain enhancement of antennas

open access: yesScientific Reports, 2021
The gain of some aperture antennas can be significantly increased by making the antenna near-field phase distribution more uniform, using a phase-transformation structure. A novel dielectric-free phase transforming structure (DF-PTS) is presented in this
Foez Ahmed   +4 more
doaj   +1 more source

Parameter selection of the error-phase-dependent HSFs.

open access: yes, 2021
Parameter selection of the error-phase-dependent HSFs.
Khalid Mahmood-ul-Hasan (11355954)   +2 more
core   +1 more source

Space-Time Block Coded and IQ-interleaved TCM, TTCM, BICM and BICM-ID Assisted OFDM [PDF]

open access: yes, 2003
Space-Time Block Coded (STBC) In-phase Quadrature-phase (IQ)-interleaved Coded Modulation (CM) schemes are proposed for Orthogonal Frequency Division Multiplexing (OFDM).
Ng, S.X.   +5 more
core   +2 more sources

Adaptive Minimum Bit Error Rate Beamforming Assisted QPSK Receiver

open access: yes, 2004
A novel adaptive beamforming technique is proposed for wireless communication with quadrature phase shift keying signalling based on the minimum bit error rate (MBER) criterion.
S. Chen   +7 more
core   +2 more sources

A hardware efficient phase/gain tracking loop for the grand alliance VSB HDTV receiver

open access: yes, 2019
Grand Alliance VSB HDTV system is a terrestrial HDTV broadcasting standard for the US. In this paper, we propose a hardware efficient algorithm for the phase/gain tracking loop block which tracks out the residual phase noise and slowly varying gain error
Lee, WH, Cheun, KH, Choi, SR
core   +1 more source

Design and analysis of a control system for an optical delay-line circuit used as reconfigurable gain equalizer [PDF]

open access: yes, 2003
The design and analysis of a control system for a coherent two-port lattice-form optical delay-line circuit used as reconfigurable gain equalizer is presented.
McBride, R.   +4 more
core   +1 more source

A 60-GHz Variable Gain Amplifier with Phase-compensated Variable Attenuator

open access: yes, 2021
A 60-GHz variable-gain amplifier with a phase-compensated variable attenuator is proposed herein. The proposed circuit comprises a four-stage common-source amplifier and a phase-compensated attenuator.
Kang, Dong Min   +7 more
core   +1 more source

Ultra-Wideband 4-Bit Distributed Phase Shifters Using Lattice Network at K/Ka- and E/W-Band

open access: yesIEEE Open Journal of the Solid-State Circuits Society
In this article, we introduce an ultra-wideband 4-bit distributed phase shifter using a lattice network. To achieve wider bandwidth, the proposed phase shifter employed an all-pass lattice network instead of the traditional low-pass ladder network. Seven
Sungwon Kwon   +2 more
doaj   +1 more source

Simulation and Experimental Studies on Perfect Tracking Optimal Control of an Electrohydraulic Actuator System

open access: yesJournal of Control Science and Engineering, 2012
This paper presents a perfect tracking optimal control for discrete-time nonminimum phase of electrohydraulic actuator (EHA) system by adopting a combination of feedback and feedforward controller.
R. Ghazali   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy