scholarly journals Reducing the effects of artificial light interference in wireless infrared transmission systems

1996 ◽  
Author(s):  
A.J.C. Moreira
Keyword(s):  
Artificial Light ◽  
Infrared Transmission ◽  
Transmission Systems ◽  
Light Interference ◽  
Wireless Infrared

scholarly journals Adaptive signal processing for infrared wireless CDMA systems

2021 ◽  
Author(s):  
Balakanthan Balendran
Keyword(s):  
Adaptive Signal Processing ◽  
Infrared Transmission ◽  
Radio System ◽  
Electronic Ballast ◽  
Light Interference ◽  
Indoor Wireless ◽  
Direct Spread ◽  
Feasible Alternative ◽  
Adaptive Signal ◽  
Wireless Infrared

Infrared system provides a feasible alternative to radio system for indoor wireless communication. Direct spread CDMA format is a promising candidate for infrared transmission system. In indoor systems, transmission is severely impaired by noise and interference produced by artificial light. In this thesis, the performance of the DS CDMA indoor wireless infrared system on diffuse channels is analyzed by taking the effects of inter symbol interference (ISI) and electronic ballast florescent light interference into account. Moreover, to mitigate the effects of ISI and electronic ballast florescent light interference, an adaptive filter technique is proposed for noise cancellation and equalization. This is done by considering a ceiling bounce model for the channel and electronic ballast florescent light for noise. Analytical and simulation results show 7dB improvement in SINR and 10-15 times improvement in BER.

Performance of infrared transmission systems under ambient light interference

1996 ◽  
Vol 143 (6) ◽  
pp. 339-346 ◽  
Author(s):  
A.J.C. Moreira ◽  
R.T. Valadas ◽  
A.M. de Oliveira Duarte
Keyword(s):  
Ambient Light ◽  
Infrared Transmission ◽  
Transmission Systems ◽  
Light Interference

scholarly journals Adaptive signal processing for infrared wireless CDMA systems

2021 ◽  
Author(s):  
Balakanthan Balendran
Keyword(s):  
Adaptive Signal Processing ◽  
Infrared Transmission ◽  
Radio System ◽  
Electronic Ballast ◽  
Light Interference ◽  
Indoor Wireless ◽  
Direct Spread ◽  
Feasible Alternative ◽  
Adaptive Signal ◽  
Wireless Infrared

Infrared system provides a feasible alternative to radio system for indoor wireless communication. Direct spread CDMA format is a promising candidate for infrared transmission system. In indoor systems, transmission is severely impaired by noise and interference produced by artificial light. In this thesis, the performance of the DS CDMA indoor wireless infrared system on diffuse channels is analyzed by taking the effects of inter symbol interference (ISI) and electronic ballast florescent light interference into account. Moreover, to mitigate the effects of ISI and electronic ballast florescent light interference, an adaptive filter technique is proposed for noise cancellation and equalization. This is done by considering a ceiling bounce model for the channel and electronic ballast florescent light for noise. Analytical and simulation results show 7dB improvement in SINR and 10-15 times improvement in BER.

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