ADSP Final Project - Input pattern will be given one week...

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ADSP Final Project 2005/12/7
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Option1: Channel Equalizer Channel H H + S N R=S*H+N In frequency domain
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Simplified Receiver ˆ ( ) H k Channel Estimator (interpolation) Equalizer 16QAM De-mapping Frequency domain signal (corrupted) Frequency Pilot location: 8k Each pilot tone carries the known symbol 1.0 1.0 R ( k ) = S ( k ) *H ( k ) + N ( k ) H ( l ), l =8 k ˆ ( ) S k K= 0~1023 FFT
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Channel Estimator - Interpolation | H(l)* P(l)| , l= 8k Frequency Frequency Pilot location: 8k Each pilot tone carries the known symbol 1.0 1.0 K= 0~1023
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Equalizer Simplest approach ( ) ˆ ( ) ˆ ( ) R k S k H k =
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16QAM Mapping Normalization (for unity power)
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Requirement Please design these blocks 1024 FFT interpolating filter equalizer signal de-mapping Fixed-point representation How is the word-length determined? Evaluation MSE of channel estimates and bit error rate (BER)
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Unformatted text preview: Input pattern will be given one week before demonstration. Option 2: Noise Cancellation Extract the speech signal which is contaminated by background noise and interference Adaptive filtering Filter Coefficient Generation Speech waveform Requirement Fixed-point representation Evaluation Peak signal to noise ratio (PSNR) Clearness Input pattern will be given before 12/14 Notice Please hand in a report (less than 4 4 pages) of your design and results. The one, who did not do well in the The one, who did not do well in the midterm exam, will definitely be failed if midterm exam, will definitely be failed if he/she does not finish the project. he/she does not finish the project....
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ADSP Final Project - Input pattern will be given one week...

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