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指導敎授 이論文을工學碩士學位論文으로提出함
이論文을工學碩士學位論文으로
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디지털채널처리부 Down conv. BB Down conv. BB A/D conv. A/D conv. Freq. & Phase Comp. Sub- Channels Demux Stream Format Sub- Channels Mux Filtering Output Level Control D/A conv. Filtering &Upconv. IF Swiching matrix Down conv. BB Down conv. BB A/D conv. A/D conv. Freq. & Phase Comp. Sub- Channels Demux Stream Format Sub- Channels Mux Filtering Output Level Control D/A conv. Filtering &Upconv. IF 역다중화 다중화 - 4 -
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ADC 디지털역다중화알고리즘 CIC M 2 filter Halfband filter 2 Halfband filter 2 Halfband filter Variable channel filter - 6 -
디지털다중화알고리즘 DAC Halfband filter 2 Halfband filter 2 Halfband CIC filter 2 filter L - 7 -
cos tan sin cos cos w R M - 8 -
sin sin Integrator M Comb 1/RM 1/RM M Z -1 Z -1 Z -R Z -R Integrator #1 Integrator #5 Comb filter #1 Comb filter #5-9 -
0-50 db -100-150 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 Normalized Freq. 0-50 db -100-150 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 Normalized Freq. - 10 -
Comb M Integrator M 1/RM 1/RM Z -R Z -R Z -1 Z -1 Comb filter #1 Comb filter #5 Integrator #1 Integrator #5 0-50 db -100-150 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 Normalized Freq. - 11 -
0-50 db -100-150 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 Normalized Freq. Halfband filter 2 Halfband filter 2-12 -
Halfband필터계수 Halfband필터 1 Halfband필터 2 Halfband필터 3 Halfband필터 4 Halfband필터 5 C0-0.031303406 0.005929947-0.001305580 0.000378609-0.000347137 C1 0.000000000 0.000000000 0.000000000 0.000000000 0.000000000 C2 0.281280518-0.049036026 0.012379646-0.003810883 0.002513170 C3 0.499954224 0.000000000 0.000000000 0.000000000 0.000000000 C4 0.284280518 0.293090820-0.060550690 0.019245148-0.010158539 C5 0.000000000 0.499969482 0.000000000 0.000000000 0.000000000 C6-0.031303406 0.293090820 0.299453735-0.069904327 0.030551910 C7 0.000000000 0.499954224 0.000000000 0.000000000 C8-0.049036026 0.299453735 0.304092407-0.081981659 C9 0.000000000 0.000000000 0.500000000 0.000000000 C10 0.005929947-0.060550690 0.304092407 0.309417725 C11 0.000000000 0.000000000 0.500000000 C12 0.012379646-0.069904327 0.309417725 C13 0.000000000 0.000000000 0.000000000 C14-0.001305580 0.019245148-0.081981659 C15 0.000000000 0.000000000 C16-0.003810883 0.030551910 C17 0.000000000 0.000000000 C18 0.000378609-0.010158539 C19 0.000000000 C20 0.002513170 C21 0.000000000 C22-0.000347137 ± ± ± ± - 13 -
0-10 -20-30 -40 db -50-60 -70-80 -90-100 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 Normalized Freq. 0-10 -20-30 -40 db -50-60 -70-80 -90-100 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 Normalized Freq. 0-10 -20-30 -40 db -50-60 -70-80 -90-100 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 Normalized Freq. - 14 -
가변채널 filter Coeff. 1 Coeff. 2-15 -
Group 1 Group 2 차수 36 41 (Passband) 0.244 0.191 (Stopband) 0.305 0.238 0-10 -20-30 db -40-50 -60-70 -80 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 Normalized Freq. 0-10 -20-30 db -40-50 -60-70 -80 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 Normalized Freq. - 16 -
0-10 -20-30 db -40-50 -60-70 -80 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1 Freq.(MHz) - 17 -
In H 0 (z) H 1 (z) H N-1 (z) M M M Channel Switch M M M F 0 (z) F 1 (z) F N-1 (z) Channel Combiner U kr Out Fixed analysis filter Fixed synthesis filter - 18 -
P 2 -π/n π/n Ω - 19 -
는정수 는정수 는정수 - 20 -
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PM-2 PM-1 P0 P1 P2 π/m 3π /M Ω - 22 -
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정수 - 24 -
N/2 P 0 (z) P 0 (z) N/2 Z -1 Z -1 N/2 P 1 (z) DFT Channel Switch IIDFT FT P 1 (z) N/2 Z -1 Z -1 N/2 P N-1 (z) P N-1 (z) N/2-25 -
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log log - 27 -
log log log - 28 -
S/P Windowing DFT Sub-band switching IDFT P/S Overlap & Add - 29 -
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0...... N-M- 1 0... M-1 M... N-1... Block i-1 0... M-1 M... N-1... Block i+1 N-M M-1 M... N-1... Block i - 31 -
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VCF S/P FFT 간섭제거 Bin 제거 IFFT P/S - 33 -
0-50 db -100-150 0 50 100 150 200 250 DFT Size 256 0-50 db -100-150 0 50 100 150 200 250 DFT Size 256-34 -
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log log log Pr - 36 -
log Pr Pr 20 18 16 14 complexity 12 10 8 6 4 2 Proposed algorithm k=1 k=2 k=4 k=8 0 100 200 300 400 500 600 700 800 900 1000 N - 37 -
cos - 38 -
0 Raised Cosine Window -20-40 db -60-80 -100-120 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5 Normalized Freq. 1 0.8 0.6 0.4 0.2 0 0 50 100 150 200 250 300 350 Number of Samples - 39 -
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0-10 -20-30 db -40-50 -60-70 -80-30 -20-10 0 10 20 30 Freq.(MHz) 0-10 -20-30 db -40-50 -60-70 -80-90 -30-20 -10 0 10 20 30 Freq.(MHz) - 41 -
1 0.8 0.6 0.4 0.2 0-0.2-0.4-0.6-0.8-1 -1-0.8-0.6-0.4-0.2 0 0.2 0.4 0.6 0.8 1-42 -
0-10 -20-30 db -40-50 -60-70 -80-90 -30-20 -10 0 10 20 30 Freq.(MHz) - 43 -
1 0.8 0.6 0.4 0.2 0-0.2-0.4-0.6-0.8-1 -1-0.8-0.6-0.4-0.2 0 0.2 0.4 0.6 0.8 1-44 -
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