A Blind Side Information Detection Scheme for Low PAPR Filter Bank Multi-Carrier Systems

2018 ◽  
Vol 43 (4) ◽  
pp. 667-676
Author(s):  
Dongjun Na ◽  
Kwonhue Choi
Keyword(s):  
Filter Bank ◽  
Side Information ◽  
Blind Side ◽  
Detection Scheme ◽  
Information Detection ◽  
Carrier Systems

A Low-Complexity Detection Scheme for Generalized Spatial Modulation Aided Single Carrier Systems

2015 ◽  
Vol 19 (6) ◽  
pp. 1069-1072 ◽  
Author(s):  
Lixia Xiao ◽  
Lilin Dan ◽  
Yunjiao Zhang ◽  
Yue Xiao ◽  
Ping Yang ◽  
...  
Keyword(s):  
Low Complexity ◽  
Spatial Modulation ◽  
Detection Scheme ◽  
Single Carrier ◽  
Carrier Systems ◽  
Single Carrier Systems

scholarly journals A selective control information detection scheme for OFDM receivers

2016 ◽  
Vol 64 (1) ◽  
pp. 31-41
Author(s):  
Saheed A. Adegbite ◽  
Scott G. McMeekin ◽  
Brian G. Stewart
Keyword(s):  
Detection Scheme ◽  
Control Information ◽  
Selective Control ◽  
Information Detection

Performance Comparison of MDFT Filter Bank with OFDM in Multi-Carrier Systems

2014 ◽  
Vol 926-930 ◽  
pp. 1822-1826
Author(s):  
Ling Zhuang ◽  
Ju Ge ◽  
Guang Yu Wang ◽  
Kai Shao
Keyword(s):  
Error Rate ◽  
Orthogonal Frequency Division Multiplexing ◽  
Filter Bank ◽  
Average Power ◽  
Symbol Error Rate ◽  
Performance Comparison ◽  
Frequency Division ◽  
System Prototype ◽  
Detailed Derivation ◽  
Carrier Systems

Based on the filter bank, the theory of multi-carrier modulation using Orthogonal Frequency Division Multiplexing (OFDM) and Modified Discrete Fourier Transform (MDFT) filter bank has been discussed and the detailed derivation process has been given. Following these discussions, the actual implementation of MDFT filter bank in multi-carrier modulation systems has been discussed, and then the comparison of their prototype functions, Peak to Average Power Ratio (PAPR) and Symbol Error Rate (SER) are drawn. Experimental results demonstrate that compared with the OFDM system, prototype functions of MDFT have obvious advantage in spectrum leakage. In terms of PAPR, they have similar performance. Whether using QPSK or 16QAM modulation, MDFT is superior to OFDM in symbol error rate as a whole and with increasing of filter length L, the advantage becomes more and more apparent.

scholarly journals Model-based sensorless robot collision detection under model uncertainties with a fast dynamics identification

2019 ◽  
Vol 16 (3) ◽  
pp. 172988141985371 ◽  
Author(s):  
Pengfei Cao ◽  
Yahui Gan ◽  
Xianzhong Dai
Keyword(s):  
Collision Detection ◽  
Least Squares Method ◽  
Side Information ◽  
Structural Complexity ◽  
Human Robot Interaction ◽  
Robot Dynamics ◽  
Model Uncertainties ◽  
Detection Scheme ◽  
Model Based ◽  
Dynamics Identification

This article presents a novel model-based sensorless collision detection scheme for human–robot interaction. In order to recognize external impacts exerted on the manipulator with sensitivity and robustness without additional exteroceptive sensors, the method based on torque residual, which is the difference between nominal and actual torque, is adopted using only motor-side information. In contrast to classic dynamics identification procedure which requires complicated symbolic derivation, a sequential dynamics identification was proposed by decomposing robot dynamics into gravity and friction item, which is simple in symbolic expression and easy to identify with least squares method, and the remaining structure-complex torque effect. Subsequently, the remaining torque effect was reformulated to overcome the structural complexity of original expression and experimentally recovered using a machine learning approach named Lasso while keeping the involving candidates number reduced to a certain degree. Moreover, a state-dependent dynamic threshold was developed to handle the abnormal peaks in residual due to model uncertainties. The effectiveness of the proposed method was experimentally validated on a conventional industrial manipulator, which illustrates the feasibility and simplicity of the collision detection method.

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