A novel method for adjusting Digital predistortion with Modulation Error Ratio in OFDM System

2016 ◽  
Author(s):  
Qun Chen ◽  
Yang Song ◽  
Feng Hu ◽  
Chaoshi Cai
Keyword(s):  
Digital Predistortion ◽  
Ofdm System ◽  
Error Ratio ◽  
Novel Method

A Method for Angular Super-Resolution via Big Data Radar System

2017 ◽  
Vol 8 (3) ◽  
pp. 1-20
Author(s):  
Xin Zhang ◽  
Xiaoming Liu ◽  
Zhenyu Na
Keyword(s):  
Big Data ◽  
Signal To Noise Ratio ◽  
Optimal Solution ◽  
Super Resolution ◽  
Radar System ◽  
Multimedia Big Data ◽  
Model Framework ◽  
System A ◽  
Error Ratio ◽  
Novel Method

This paper proposes a novel method for enhancing angular resolution in multimedia big data navigation radar system. A new radar scanning model is designed on the basis of quadratic programming theory, by which the proposed Gradient Projection (GP) algorithm is used for solving the optimal solution of this model, and then the target information can be restored successfully at low signal to noise ratio (SNR). Simulations further confirm our theoretical discussion, and manifest that the efficiency and applicability of the proposed method is favorable that the resolution ratio reaches 4~11 times under our proposed scanning model framework if SNR is above 10dB. Moreover, the designed model is suitable for some other angular super-resolution methods, the restoration ratio of which can be improved while SNR is be equal or greater than 10dB. In this case, a higher signal to reconstructed error ratio (SRER) is provided by our method.

A Novel Method for Reducing the Side Information of MSR-OFDM System

2008 ◽  
Author(s):  
Xu He ◽  
Qingsong Wen ◽  
Yue Xiao ◽  
Shaoqian Li
Keyword(s):  
Side Information ◽  
Ofdm System ◽  
Novel Method

scholarly journals The effects of digital predistortion in a CO-OFDM system – a stochastic approach

2020 ◽  
pp. 1-1
Author(s):  
Jacqueline E. Sime ◽  
Pascal Morel ◽  
Mohamad Younes ◽  
Igor S. Stievano ◽  
Mihai Telescu ◽  
...  
Keyword(s):  
Stochastic Approach ◽  
Digital Predistortion ◽  
Ofdm System ◽  
System A

A Novel Method of PAPR Reducing for OFDM Systems

2011 ◽  
Vol 130-134 ◽  
pp. 1172-1176
Author(s):  
Shan Lin Sun
Keyword(s):  
Ofdm Systems ◽  
Ofdm System ◽  
Novel Method ◽  
Simulation Results ◽  
Ber Performance ◽  
Better Than

In order to reduce the PAPR of OFDM system, DST is introduced into OFDM systems. DST will not cause BER deterioration and side redundant in OFDM system. In this paper, the performance of DST-OFDM systems is analyzed in theory. The simulation results show that DST method is better than conventional manners in PAPR reducing, system BER performance and implementation complexity.

The removal and morphology of intact biofilms from implanted venous access devices

1995 ◽  
Vol 53 ◽  
pp. 1020-1021
Author(s):  
M.A. Gregory ◽  
G.P. Hadley
Keyword(s):  
Patient Selection ◽  
Surgical Oncology ◽  
Venous Access ◽  
Common Procedure ◽  
Indwelling Catheters ◽  
Careful Patient ◽  
Novel Method ◽  
The Subject ◽  
Vascular Catheters ◽  
Venous Access Devices

The insertion of implanted venous access systems for children undergoing prolonged courses of chemotherapy has become a common procedure in pediatric surgical oncology. While not permanently implanted, the devices are expected to remain functional until cure of the primary disease is assured. Despite careful patient selection and standardised insertion and access techniques, some devices fail. The most commonly encountered problems are colonisation of the device with bacteria and catheter occlusion. Both of these difficulties relate to the development of a biofilm within the port and catheter. The morphology and evolution of biofilms in indwelling vascular catheters is the subject of ongoing investigation. To date, however, such investigations have been confined to the examination of fragments of biofilm scraped or sonicated from sections of catheter. This report describes a novel method for the extraction of intact biofilms from indwelling catheters.15 children with Wilm’s tumour and who had received venous implants were studied. Catheters were removed because of infection (n=6) or electively at the end of chemotherapy.

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