Video Demos of Radio Frequency Interference and Mitigation

Communication of compressed video stream over additive impulsive noise channel

MPEG II video stream obtained from digital camera

• 142 MB uncompressed video stream
• 10.2 MB compressed video stream

• Binary phase shift keying
• Raised cosine pulse 10 symbols long
• 10 samples/symbol

• Additive impulsive noise channel
• Impulsive noise is Middleton Class A with an overlap index of 0.35 and a Gaussian factor of 0.001
• Signal-to-Noise Ratio (SNR) is 19 dB

• Correlation receiver (matched filter, downsampling and decision device)
• Based on assumption that additive noise in channel is Gaussian

• Composite of (left) original uncompressed video stream and (right) decompressed received MPEG II video stream
• Shows degradation of video quality over impulsive channels with standard receivers (based on Gaussian noise assumption)

Communication of compressed video stream over additive impulsive noise channel

MPEG II video stream obtained from digital camera

• 124 MB uncompressed video stream
• 5.9 MB compressed video stream

• Binary phase shift keying
• Raised cosine pulse 10 symbols long
• 10 samples/symbol

• Additive impulsive noise channel
• Impulsive noise was Middleton Class A with an overlap index of 0.35 and a Gaussian factor of 0.001
• Signal-to-Noise Ratio (SNR) is 19 dB

• Correlation receiver (matched filter, downsampling and decision device)
• Based on assumption that additive noise in channel is Gaussian

• Composite of (left) original uncompressed video stream, (middle) decompressed received MPEG II video stream using a correlation receiver, and (right) decompressed received MPEG II video stream using a Bayesian receiver tuned to impulsive noise
• Shows degradation of video quality over impulsive channels with standard receivers (based on Gaussian noise assumption) and dramatic improvement with receivers tuned to impulsive noise

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