Results 51 to 60 of about 824,618 (117)

CMA and soft decision-directed scheme for semi-blind beamforming of QAM systems

open access: yes, 2008
We propose a semi-blind adaptive beamforming approach for wireless systems that employ high-throughput quadrature amplitude modulation signalling schemes.
W. Yao   +5 more
core   +1 more source

Conditional error rate and combining schemes for hybrid automatic repeat request with M-pulse amplitude modulation

open access: yes, 2014
In hybrid automatic repeat request (HARQ), maximum ratio combining (MRC) is usually employed at the receiver if the retransmitted signal is the same as that of the first transmission.
Xiang, Wei   +11 more
core   +1 more source

Near-Instantaneously Adaptive Decision Feedback Equalized Coded Modulation for Wireless Video Telephony

open access: yes, 2001
Decision Feedback Equaliation (DFE) aided wideband Burst-by-Burst (BbB) Adaptive Trellis Coded Modulation (TCM), Turbo Trellis Coded Modulation (TTCM) and Bit-Interleaved Coded Modulation (BICM) are proposed and characterised in performance terms over ...
Ng, S.X., Cherriman, P.J., Hanzo, L.
core  

Minimum symbol error rate turbo multiuser beamforming aided QAM receiver

open access: yes, 2008
This paper studies a novel iterative soft interference cancellation (SIC) aided beamforming receiver designed for high-throughput quadrature amplitude modulation systems communicating over additive white Gaussian noise channels.
Chen, Sheng, Tan, S, Hanzo, L
core  

Satellite Based Turbo-Coded, Blind-Equalised 4-QAM and 16-QAM Digital Video Broadcasting

open access: yes, 2000
The Pan-European Digital Satellite Video Broadcasting (DVB-S) system’s performance is characterized and improved with the aid of turbo coding and multi-level modulation.
Lee, C.S., Vlahoyiannatos, S., Hanzo, L.
core  

Turbo-Coded Adaptive Modulation Versus Space-Time Trellis Codes for Transmission over Dispersive Channels

open access: yes, 2004
Decision feedback equalizer (DFE)-aided turbocoded wideband adaptive quadrature amplitude modulation (AQAM) is proposed, which is capable of combating the temporal channel quality variation of fading channels. A procedure is suggested for determining the
Liew, T.H., Wong, C.H., Hanzo, L.
core  

Amplitude Modulation Mode of Scanning Ion Conductance Microscopy

open access: yes, 2015
Live-cell imaging at the nanoscale resolution is a hot research topic in the field of life sciences for the direct observation of cellular biological activity.
Li GY(李广勇)   +6 more
core  

Inter-Turn Short Circuit Detection Based on Modulation Signal Bispectrum Analysis of Motor Current Signals

open access: yes, 2013
Motor current signature analysis (MCSA) is a common practice in industry for finding motor faults. However, because of small modulations caused by faults and high noise contamination, it is difficult to quantify the modulation in measured signals which ...
Gu, Fengshou   +8 more
core  

Modulation Signal Bispectrum Analysis of Motor Current Signals for Stator Fault Diagnosis

open access: yes, 2012
Induction motors are the most widely used electrical machines in industry. To diagnose any possible incipient faults, many techniques have been developed.
Gu, Fengshou   +9 more
core  

Low-Complexity Near-Optimum Multiple-Symbol Differential Detection of DAPSK Based on Iterative Amplitude/Phase Processing

open access: yes
Differentially encoded and non-coherently detected transceivers exhibit a low complexity, since they dispense with complex channel estimation. In pursuit of high bandwidth efficiency, differential amplitude and phase shift keying (DAPSK) was devised ...
Wang, Li, Hanzo, Lajos
core  

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