scholarly journals Image Transmission over Fading Channels using RS-CC versus LDPC Coding

2012 ◽  
Author(s):  
Erhan A. İnce ◽  
Edmond Nurellari ◽  
Leonardo O. Iheme
Keyword(s):  
Fading Channels ◽  
Image Transmission

scholarly journals Performance Analysis of Transmit Antenna Selection with MRC in MIMO for Image Transmission in Multipath Fading Channels Using Simulink

2015 ◽  
Vol 5 (1) ◽  
pp. 119
Author(s):  
Vaibhav S Hendre ◽  
M Murugan ◽  
Sneha Kamthe
Keyword(s):  
Performance Analysis ◽  
Fading Channels ◽  
Antenna Selection ◽  
Multiple Input Multiple Output ◽  
Image Transmission ◽  
Multipath Fading ◽  
Block Codes ◽  
Maximal Ratio Combining ◽  
Transmit Antenna Selection ◽  
Diversity Techniques

<em><span>Multiple antenna configurations can be used to increase the data throughput reducing the effects of multipath fading and interference when channel bandwidth is limited. Orthogonal Space Time Block Codes along with Transmit antenna selection can improve the performance of multiple input multiple output systems. In this paper, we present the Transmit Antenna Selection (TAS) technique based on the Maximal Ratio Combining (MRC) scheme with single antenna selection for image transmission. The performance analysis of the system was carried out under different fading channels i.e. Rayleigh and Rician channel for image input. We design end to end TAS/MRC system in Simulink with advancements in the channel designs and receive diversity techniques along with the feedback models. The Bit Error Rate (BER) analysis was performed for the combinations of number of transmit and receive antennas for TAS/MRC system for various fading environments.</span></em>

scholarly journals Performance Evaluation of CDMA - MIMO (STBC) System over Rayleigh Fading Channel for Image Transmission

2017 ◽  
Vol 1 (2) ◽  
pp. 5
Author(s):  
I G. A. K. Diafari Djuni H ◽  
I G. A. P. Raka Agung
Keyword(s):  
Fading Channels ◽  
Data Transmission ◽  
Fading Channel ◽  
Rayleigh Fading ◽  
Image Transmission ◽  
Rayleigh Distribution ◽  
Cdma System ◽  
Spreading Code ◽  
Spreading Factor ◽  
Average Value

Data transmission via wireless communication system is not only in text form but it also can be in image form. In the process of sending data or information, it often experiences interference in transmission media, which is fading. The method used in this research is by simulation using MATLAB. The simulation of CDMA-MIMO (STBC) system with Walsh spreading code is expected to reduce the disturbance of fading. Fading channels can be modeled using Rayleigh distribution. The number of users and spreading factors affect the performance of CDMA-MIMO (STBC) systems. The parameters used in this simulation were SNR, BER, and PSNR. The results showed that image reconstruction passing CDMAMIMO system with spreading factor 4 has better image quality. Its PSNR 33.9589dB when SNR -10dB. SNR was increased 10 dB then PSNR 60.00 dB. The increasing of spreading factor to 8 and 16 was obtained by increasing PSNR, PSNR 35.0685 dB and PSNR 37.5665 dB, respectively. For 4 users with Spreading Factor 4 and SNR 0 to 5 dB, it was changed the BER. This is influenced by changes in SNR. The higher SNR value, the average value of BER will be smaller. A growing number of users from 1 to 4 users were decreased the performance of the MIMO CDMA system when observed from the BER and PSNR.

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