scholarly journals A real-time software implementation of an OFDM modem suitable for software defined radios

2004 ◽  
Author(s):  
A.L. Cinquino ◽  
Y.R. Shayan
Keyword(s):  
Real Time ◽  
Software Implementation ◽  
Software Defined Radios

Theoretical basis and software implementation of contour analysis of cardiosignals in real time

1999 ◽  
Vol 33 (1) ◽  
pp. 27-31
Author(s):  
V. A. Kalantar ◽  
A. G. Arakcheev ◽  
V. P. Gundarov
Keyword(s):  
Real Time ◽  
Theoretical Basis ◽  
Software Implementation ◽  
Contour Analysis

scholarly journals Effective Analysis of an Iterative Median Filter-Hardware and Software Perspective

2019 ◽  
Vol 8 (3) ◽  
pp. 5580-5583
Keyword(s):  
Image Quality ◽  
Real Time ◽  
Median Filter ◽  
Iteration Process ◽  
Software Implementation ◽  
Quality Enhancement ◽  
Image Quality Enhancement ◽  
Key Factor ◽  
Effective Analysis

Image quality enhancement is a very predominant domain of discussion as the complexity of system increases, the software implementation becomes a key factor but it is not always reliable to use the approach for adaptable applications such as medical, military or real time purpose. In order to address such scenarios it is necessary to have a reconfigurable and an adaptable implementation. In this paper we have addressed the hardware modeling of a median filter using double iteration process. The iterative median filter is implemented on an Artix-7 FPGA.

Mutual Coupling Compensation in Receiving Arrays and Its Implementation on Software Defined Radios

2021 ◽  
Vol 35 (11) ◽  
pp. 1433-1434
Author(s):  
Sana Khan ◽  
Hassan Sajjad ◽  
Mehmet Ozdemir ◽  
Ercument Arvas
Keyword(s):  
Real Time ◽  
Mutual Coupling ◽  
Linear Array ◽  
Incident Angle ◽  
Direction Of Arrival ◽  
Doa Estimation ◽  
Substantial Improvement ◽  
Uniform Linear Array ◽  
Low Snr ◽  
Software Defined Radios

Mutual coupling is compensated in a four element uniform linear receiving array using software defined radios. Direction of arrival (DoA) is estimated in real-time for the array with spacing d=lambda/4. The decoupling matrix was measured using a VNA for only one incident angle. After compensation the error in DoA estimation was reduced to 5%. Comparing the DoA results with d=lambda/2 spaced Uniform Linear Array (ULA), 1.2% error was observed. Although, the experiment was performed indoors with a low SNR, the results show a substantial improvement in the estimated DoA after compensation.

Real-time PC-based software implementation of H.261 video codec

1997 ◽  
Vol 43 (4) ◽  
pp. 1234-1244 ◽  
Author(s):  
Den-Yuan Hsiau ◽  
Ja-Ling Wu
Keyword(s):  
Real Time ◽  
Video Codec ◽  
Software Implementation

Software implementation of real-time Digital Scan Converter

2010 ◽  
Author(s):  
Hui Wang ◽  
Juan Deng ◽  
Dongdong Li ◽  
Xiuxiu Xie ◽  
Quanzhong Guo ◽  
...  
Keyword(s):  
Real Time ◽  
Software Implementation

scholarly journals Distributed Arithmetic for Efficient Base-Band Processing in Real-Time GNSS Software Receivers

2010 ◽  
Vol 2010 ◽  
pp. 1-4 ◽  
Author(s):  
Grégoire Waelchli ◽  
Marcel Baracchi-Frei ◽  
Cyril Botteron ◽  
Pierre-André Farine
Keyword(s):  
Real Time ◽  
Mobile Devices ◽  
Software Implementation ◽  
Gps Receiver ◽  
Distributed Arithmetic ◽  
Receiver Architecture ◽  
Software Receivers ◽  
The Cost ◽  
Base Band ◽  
New Algorithms

The growing market of GNSS capable mobile devices is driving the interest of GNSS software solutions, as they can share many system resources (processor, memory), reducing both the size and the cost of their integration. Indeed, with the increasing performance of modern processors, it becomes now feasible to implement in software a multichannel GNSS receiver operating in real time. However, a major issue with this approach is the large computing resources required for the base-band processing, in particular for the correlation operations. Therefore, new algorithms need to be developed in order to reduce the overall complexity of the receiver architecture. Towards that aim, this paper first introduces the challenges of the software implementation of a GPS receiver, with a main focus given to the base-band processing and correlation operations. It then describes the already existing solutions and, from this, introduces a new algorithm based on distributed arithmetic.

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