Software-defined decision-feedback multiuser detection in frequency domain for single-carrier and multi-carrier CDMA systems-a sequential quadratic programming approach

2004 ◽  
Author(s):  
Kai Yang ◽  
A.S. Madhukumar ◽  
F. Chin
Keyword(s):  
Quadratic Programming ◽  
Frequency Domain ◽  
Multiuser Detection ◽  
Sequential Quadratic Programming ◽  
Decision Feedback ◽  
Programming Approach ◽  
Single Carrier ◽  
Cdma Systems

Optimization-based transient control of turbofan engines: a sequential quadratic programming approach

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Jiqiang Wang ◽  
Huan Hu ◽  
Weicun Zhang ◽  
Zhongzhi Hu
Keyword(s):  
Quadratic Programming ◽  
Sequential Quadratic Programming ◽  
Programming Approach ◽  
Evolutionary Computations ◽  
Turbofan Engines ◽  
Flight Envelope ◽  
Transient Control ◽  
Limit Protection ◽  
Computational Resources ◽  
Design Guidance

Abstract Engine transient control has been challenging due to its stringent requirements from both performance and safety. Many methodologies have been proposed such as conventional schedule-based methods, linear parameter varying, multiobjective optimization and evolutionary computations etc. These approaches have been well-established and led to a series of significant results. However, they are either not providing limit protection or requiring exhaustive computational resources, particularly when generating results into full flight envelope applications. Consequently a compromise between limit protection and computational complexity is necessitated. This note considers a sequential quadratic programming (SQP)-based method for full flight envelope investigations. The proposed method can provide important design guidance and the corresponding claims are validated through detailed analysis and simulations.

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