A new type double-threshold signal detection algorithm for satellite communication systems based on stochastic resonance technology

2019 ◽  
Author(s):  
Xiaolin Jiang ◽  
Ming Diao
Keyword(s):  
Signal Detection ◽  
Stochastic Resonance ◽  
Communication Systems ◽  
Satellite Communication ◽  
Detection Algorithm ◽  
New Type ◽  
Double Threshold

Blind Signal Detection Techniques for Spectrum Sensing in Satellite Communication

2017 ◽  
pp. 1-48
Author(s):  
Bilal Muhammad Khan ◽  
Rabia Bilal
Keyword(s):  
Correlation Function ◽  
Signal Detection ◽  
Communication Systems ◽  
Satellite Communication ◽  
Spectral Correlation ◽  
Detection Techniques ◽  
Blind Signal ◽  
Modulated Signals ◽  
Spectral Correlation Function ◽  
Frequency Axis

Modulated signals used in communication systems exhibits cyclic periodicity. This is primarily due to sinusoidal product modulators, repeating preambles, coding and multiplexing in modern communication. This property of signals can be analyzed using cyclostationary analysis. SCF (Spectral correlation function) of cyclic autocorrelation (CAF) has unique features for different modulated signals and noise. Different techniques are applied to SCF for extracting features on the basis of which decision of detecting a signal or noise is made. In this chapter, study and analysis of different modulated signals used in satellite communication is presented using SCF. Also comparison of several signal detection techniques is provided on the basis of utilizing unique feature exhibit by a normalized vector calculated on SCF along frequency axis. Moreover a signal detection technique is also proposed which identifies the presence of a signal or noise in the analyzed data within the defined threshold limits.

REDUCING THE COMPUTATIONAL COMPLEXITY OF SIGNAL DETECTION IN MIMO SYSTEMS

2021 ◽  
Author(s):  
М.Г. БАКУЛИН ◽  
Т.Б.К. БЕН РАЖЕБ ◽  
В.Б. КРЕЙНДЕЛИН ◽  
А.Э. СМИРНОВ
Keyword(s):  
Computational Complexity ◽  
Signal Detection ◽  
Massive Mimo ◽  
Communication Systems ◽  
Noise Immunity ◽  
Mimo Systems ◽  
Detection Algorithm ◽  
Wireless Communication Systems ◽  
Detection Algorithms ◽  
Mimo Technology

С развитием технологии MIMO и появлением технологии massive MIMO возросла сложность обработки сигнала на приемной стороне. Применение известных алгоритмов детектирования сигнала на приемной стороне становится трудно реализуемым из-за высокой вычислительной сложности. Предлагается новая реализация известного алгоритма МСКО, которая позволяет снизить вычислительную сложность детектирования без потерь в помехоустойчивости в системах беспроводной связи, использующих технологию massive MIMO. With the development of MIMO technology and the appearance of the massive MIMO technology, the computational complexity of signal processing on the receiving side has increased. The application of known signal detection algorithms used in MIMO systems becomes difficult or even impossible to implement in massive MIMO systems because of computational complexity. We offer a new realization technique of the well-known MMSE detection algorithm with less computational complexity and without any loss in noise immunity in wireless communication systems using massive MIMO technology.

Performance of 4G-LTE Communication and Navigation System in Blended Wing-Body UAS

2019 ◽  
Vol 8 (4) ◽  
pp. 9538-9542
Keyword(s):  
Satellite Communication ◽  
Line Of Sight ◽  
Multiple Factors ◽  
The World ◽  
New Type ◽  
Blended Wing Body ◽  
4G Lte ◽  
The Right ◽  
And Control ◽  
Technology Demonstrator

In vision of searching for the right Unmanned Aerial System (UAS) for a specific mission, there are multiple factors to be considered by the operator such as mission, endurance, type of payload and range of the telemetry and control. This research is focusing on extending control range of the UAS by using 4G-LTE network to enable beyond-line-of-sight flying for the commercial UAS. Major UAS such Global Hawk, Predator MQ-1 are able to fly thousands of kilometers by the use of satellite communication. However, the satellite communication annual license subscription can be very expensive. With this situation in mind, a new type of flight controller with 4G-LTE communication has been developed and tested. Throughout the research, blended-wing-body (BWB) Baseline B2S is used as the platform for technology demonstrator. Result from this analysis has proven that the proposed system is capable to control a UAS from as far as United Kingdom, with a latency less than 881 ms in average. The new added capability can potentially give the commercial UAS community a new horizon to be able to control their UAS from anywhere around the world with the availability of 4G-LTE connection

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